initiliaze git rep

7 files changed, 3988 insertions, 0 deletions

diff --git a/templates/content/js/wmd/images/wmd-buttons.png b/templates/content/js/wmd/images/wmd-buttons.png
new file mode 100644
index 00000000..50b37090
--- /dev/null
+++ b/templates/content/js/wmd/images/wmd-buttons.png
diff --git a/templates/content/js/wmd/showdown-min.js b/templates/content/js/wmd/showdown-min.js
new file mode 100644
index 00000000..073613b1
--- /dev/null
+++ b/templates/content/js/wmd/showdown-min.js
@@ -0,0 +1 @@
+var Attacklab=Attacklab||{};Attacklab.showdown=Attacklab.showdown||{};Attacklab.showdown.converter=function(){var a;var j;var A;var i=0;this.makeHtml=function(H){a=new Array();j=new Array();A=new Array();H=H.replace(/~/g,"~T");H=H.replace(/\$/g,"~D");H=H.replace(/\r\n/g,"\n");H=H.replace(/\r/g,"\n");H="\n\n"+H+"\n\n";H=z(H);H=H.replace(/^[ \t]+$/mg,"");H=m(H);H=d(H);H=G(H);H=q(H);H=H.replace(/~D/g,"$$");H=H.replace(/~T/g,"~");return H};var d=function(H){var H=H.replace(/^[ ]{0,3}\[(.+)\]:[ \t]*\n?[ \t]*<?(\S+?)>?[ \t]*\n?[ \t]*(?:(\n*)["(](.+?)[")][ \t]*)?(?:\n+|\Z)/gm,function(K,M,L,J,I){M=M.toLowerCase();a[M]=h(L);if(J){return J+I}else{if(I){j[M]=I.replace(/"/g,"&quot;")}}return""});return H};var m=function(J){J=J.replace(/\n/g,"\n\n");var I="p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del";var H="p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math";J=J.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del)\b[^\r]*?\n<\/\2>[ \t]*(?=\n+))/gm,x);J=J.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math)\b[^\r]*?.*<\/\2>[ \t]*(?=\n+)\n)/gm,x);J=J.replace(/(\n[ ]{0,3}(<(hr)\b([^<>])*?\/?>)[ \t]*(?=\n{2,}))/g,x);J=J.replace(/(\n\n[ ]{0,3}<!(--[^\r]*?--\s*)+>[ \t]*(?=\n{2,}))/g,x);J=J.replace(/(?:\n\n)([ ]{0,3}(?:<([?%])[^\r]*?\2>)[ \t]*(?=\n{2,}))/g,x);J=J.replace(/\n\n/g,"\n");return J};var x=function(H,I){var J=I;J=J.replace(/\n\n/g,"\n");J=J.replace(/^\n/,"");J=J.replace(/\n+$/g,"");J="\n\n~K"+(A.push(J)-1)+"K\n\n";return J};var G=function(I){I=f(I);var H=o("<hr />");I=I.replace(/^[ ]{0,2}([ ]?\*[ ]?){3,}[ \t]*$/gm,H);I=I.replace(/^[ ]{0,2}([ ]?-[ ]?){3,}[ \t]*$/gm,H);I=I.replace(/^[ ]{0,2}([ ]?_[ ]?){3,}[ \t]*$/gm,H);I=E(I);I=b(I);I=u(I);I=m(I);I=g(I);return I};var r=function(H){H=C(H);H=l(H);H=e(H);H=F(H);H=y(H);H=n(H);H=h(H);H=c(H);H=H.replace(/  +\n/g," <br />\n");return H};var l=function(I){var H=/(<[a-z\/!$]("[^"]*"|'[^']*'|[^'">])*>|<!(--.*?--\s*)+>)/gi;I=I.replace(H,function(K){var J=K.replace(/(.)<\/?code>(?=.)/g,"$1`");J=w(J,"\\`*_");return J});return I};var y=function(H){H=H.replace(/(\[((?:\[[^\]]*\]|[^\[\]])*)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g,D);H=H.replace(/(\[((?:\[[^\]]*\]|[^\[\]])*)\]\([ \t]*()<?(.*?)>?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g,D);H=H.replace(/(\[([^\[\]]+)\])()()()()()/g,D);return H};var D=function(N,T,S,R,Q,P,M,L){if(L==undefined){L=""}var K=T;var I=S;var J=R.toLowerCase();var H=Q;var O=L;if(H==""){if(J==""){J=I.toLowerCase().replace(/ ?\n/g," ")}H="#"+J;if(a[J]!=undefined){H=a[J];if(j[J]!=undefined){O=j[J]}}else{if(K.search(/\(\s*\)$/m)>-1){H=""}else{return K}}}H=w(H,"*_");var U='<a href="'+H+'"';if(O!=""){O=O.replace(/"/g,"&quot;");O=w(O,"*_");U+=' title="'+O+'"'}U+=">"+I+"</a>";return U};var F=function(H){H=H.replace(/(!\[(.*?)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g,t);H=H.replace(/(!\[(.*?)\]\s?\([ \t]*()<?(\S+?)>?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g,t);return H};var t=function(N,T,S,R,Q,P,M,L){var K=T;var J=S;var I=R.toLowerCase();var H=Q;var O=L;if(!O){O=""}if(H==""){if(I==""){I=J.toLowerCase().replace(/ ?\n/g," ")}H="#"+I;if(a[I]!=undefined){H=a[I];if(j[I]!=undefined){O=j[I]}}else{return K}}J=J.replace(/"/g,"&quot;");H=w(H,"*_");var U='<img src="'+H+'" alt="'+J+'"';O=O.replace(/"/g,"&quot;");O=w(O,"*_");U+=' title="'+O+'"';U+=" />";return U};var f=function(H){H=H.replace(/^(.+)[ \t]*\n=+[ \t]*\n+/gm,function(I,J){return o("<h1>"+r(J)+"</h1>")});H=H.replace(/^(.+)[ \t]*\n-+[ \t]*\n+/gm,function(J,I){return o("<h2>"+r(I)+"</h2>")});H=H.replace(/^(\#{1,6})[ \t]*(.+?)[ \t]*\#*\n+/gm,function(I,L,K){var J=L.length;return o("<h"+J+">"+r(K)+"</h"+J+">")});return H};var p;var E=function(I){I+="~0";var H=/^(([ ]{0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/gm;if(i){I=I.replace(H,function(K,N,M){var O=N;var L=(M.search(/[*+-]/g)>-1)?"ul":"ol";O=O.replace(/\n{2,}/g,"\n\n\n");var J=p(O);J=J.replace(/\s+$/,"");J="<"+L+">"+J+"</"+L+">\n";return J})}else{H=/(\n\n|^\n?)(([ ]{0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/g;I=I.replace(H,function(L,P,N,K){var O=P;var Q=N;var M=(K.search(/[*+-]/g)>-1)?"ul":"ol";var Q=Q.replace(/\n{2,}/g,"\n\n\n");var J=p(Q);J=O+"<"+M+">\n"+J+"</"+M+">\n";return J})}I=I.replace(/~0/,"");return I};p=function(H){i++;H=H.replace(/\n{2,}$/,"\n");H+="~0";H=H.replace(/(\n)?(^[ \t]*)([*+-]|\d+[.])[ \t]+([^\r]+?(\n{1,2}))(?=\n*(~0|\2([*+-]|\d+[.])[ \t]+))/gm,function(K,M,L,J,I){var O=I;var N=M;var P=L;if(N||(O.search(/\n{2,}/)>-1)){O=G(s(O))}else{O=E(s(O));O=O.replace(/\n$/,"");O=r(O)}return"<li>"+O+"</li>\n"});H=H.replace(/~0/g,"");i--;return H};var b=function(H){H+="~0";H=H.replace(/(?:\n\n|^)((?:(?:[ ]{4}|\t).*\n+)+)(\n*[ ]{0,3}[^ \t\n]|(?=~0))/g,function(I,K,J){var L=K;var M=J;L=v(s(L));L=z(L);L=L.replace(/^\n+/g,"");L=L.replace(/\n+$/g,"");L="<pre><code>"+L+"\n</code></pre>";return o(L)+M});H=H.replace(/~0/,"");return H};var o=function(H){H=H.replace(/(^\n+|\n+$)/g,"");return"\n\n~K"+(A.push(H)-1)+"K\n\n"};var C=function(H){H=H.replace(/(^|[^\\])(`+)([^\r]*?[^`])\2(?!`)/gm,function(K,M,L,J,I){var N=J;N=N.replace(/^([ \t]*)/g,"");N=N.replace(/[ \t]*$/g,"");N=v(N);return M+"<code>"+N+"</code>"});return H};var v=function(H){H=H.replace(/&/g,"&amp;");H=H.replace(/</g,"&lt;");H=H.replace(/>/g,"&gt;");H=w(H,"*_{}[]\\",false);return H};var c=function(H){H=H.replace(/(\*\*|__)(?=\S)([^\r]*?\S[\*_]*)\1/g,"<strong>$2</strong>");H=H.replace(/(\*|_)(?=\S)([^\r]*?\S)\1/g,"<em>$2</em>");return H};var u=function(H){H=H.replace(/((^[ \t]*>[ \t]?.+\n(.+\n)*\n*)+)/gm,function(I,J){var K=J;K=K.replace(/^[ \t]*>[ \t]?/gm,"~0");K=K.replace(/~0/g,"");K=K.replace(/^[ \t]+$/gm,"");K=G(K);K=K.replace(/(^|\n)/g,"$1  ");K=K.replace(/(\s*<pre>[^\r]+?<\/pre>)/gm,function(L,M){var N=M;N=N.replace(/^  /mg,"~0");N=N.replace(/~0/g,"");return N});return o("<blockquote>\n"+K+"\n</blockquote>")});return H};var g=function(N){N=N.replace(/^\n+/g,"");N=N.replace(/\n+$/g,"");var M=N.split(/\n{2,}/g);var J=new Array();var H=M.length;for(var I=0;I<H;I++){var L=M[I];if(L.search(/~K(\d+)K/g)>=0){J.push(L)}else{if(L.search(/\S/)>=0){L=r(L);L=L.replace(/^([ \t]*)/g,"<p>");L+="</p>";J.push(L)}}}H=J.length;for(var I=0;I<H;I++){while(J[I].search(/~K(\d+)K/)>=0){var K=A[RegExp.$1];K=K.replace(/\$/g,"$$$$");J[I]=J[I].replace(/~K\d+K/,K)}}return J.join("\n\n")};var h=function(H){H=H.replace(/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/g,"&amp;");H=H.replace(/<(?![a-z\/?\$!])/gi,"&lt;");return H};var e=function(H){H=H.replace(/\\(\\)/g,k);H=H.replace(/\\([`*_{}\[\]()>#+-.!])/g,k);return H};var n=function(H){H=H.replace(/<((https?|ftp|dict):[^'">\s]+)>/gi,'<a href="$1">$1</a>');H=H.replace(/<(?:mailto:)?([-.\w]+\@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)>/gi,function(I,J){return B(q(J))});return H};var B=function(J){function I(L){var K="0123456789ABCDEF";var M=L.charCodeAt(0);return(K.charAt(M>>4)+K.charAt(M&15))}var H=[function(K){return"&#"+K.charCodeAt(0)+";"},function(K){return"&#x"+I(K)+";"},function(K){return K}];J="mailto:"+J;J=J.replace(/./g,function(K){if(K=="@"){K=H[Math.floor(Math.random()*2)](K)}else{if(K!=":"){var L=Math.random();K=(L>0.9?H[2](K):L>0.45?H[1](K):H[0](K))}}return K});J='<a href="'+J+'">'+J+"</a>";J=J.replace(/">.+:/g,'">');return J};var q=function(H){H=H.replace(/~E(\d+)E/g,function(I,K){var J=parseInt(K);return String.fromCharCode(J)});return H};var s=function(H){H=H.replace(/^(\t|[ ]{1,4})/gm,"~0");H=H.replace(/~0/g,"");return H};var z=function(H){H=H.replace(/\t(?=\t)/g,"    ");H=H.replace(/\t/g,"~A~B");H=H.replace(/~B(.+?)~A/g,function(I,L,K){var N=L;var J=4-N.length%4;for(var M=0;M<J;M++){N+=" "}return N});H=H.replace(/~A/g,"    ");H=H.replace(/~B/g,"");return H};var w=function(L,I,J){var H="(["+I.replace(/([\[\]\\])/g,"\\$1")+"])";if(J){H="\\\\"+H}var K=new RegExp(H,"g");L=L.replace(K,k);return L};var k=function(H,J){var I=J.charCodeAt(0);return"~E"+I+"E"}};var Showdown=Attacklab.showdown;if(Attacklab.fileLoaded){Attacklab.fileLoaded("showdown.js")};
\ No newline at end of file
diff --git a/templates/content/js/wmd/showdown.js b/templates/content/js/wmd/showdown.js
new file mode 100644
index 00000000..3f4b9947
--- /dev/null
+++ b/templates/content/js/wmd/showdown.js
@@ -0,0 +1,1309 @@
+//
+// showdown.js -- A javascript port of Markdown.
+//
+// Copyright (c) 2007 John Fraser.
+//
+// Original Markdown Copyright (c) 2004-2005 John Gruber
+//   <http://daringfireball.net/projects/markdown/>
+//
+// Redistributable under a BSD-style open source license.
+// See license.txt for more information.
+//
+// The full source distribution is at:
+//
+//				A A L
+//				T C A
+//				T K B
+//
+//   <http://www.attacklab.net/>
+//
+
+//
+// Wherever possible, Showdown is a straight, line-by-line port
+// of the Perl version of Markdown.
+//
+// This is not a normal parser design; it's basically just a
+// series of string substitutions.  It's hard to read and
+// maintain this way,  but keeping Showdown close to the original
+// design makes it easier to port new features.
+//
+// More importantly, Showdown behaves like markdown.pl in most
+// edge cases.  So web applications can do client-side preview
+// in Javascript, and then build identical HTML on the server.
+//
+// This port needs the new RegExp functionality of ECMA 262,
+// 3rd Edition (i.e. Javascript 1.5).  Most modern web browsers
+// should do fine.  Even with the new regular expression features,
+// We do a lot of work to emulate Perl's regex functionality.
+// The tricky changes in this file mostly have the "attacklab:"
+// label.  Major or self-explanatory changes don't.
+//
+// Smart diff tools like Araxis Merge will be able to match up
+// this file with markdown.pl in a useful way.  A little tweaking
+// helps: in a copy of markdown.pl, replace "#" with "//" and
+// replace "$text" with "text".  Be sure to ignore whitespace
+// and line endings.
+//
+
+
+//
+// Showdown usage:
+//
+//   var text = "Markdown *rocks*.";
+//
+//   var converter = new Attacklab.showdown.converter();
+//   var html = converter.makeHtml(text);
+//
+//   alert(html);
+//
+// Note: move the sample code to the bottom of this
+// file before uncommenting it.
+//
+
+
+//
+// Attacklab namespace
+//
+var Attacklab = Attacklab || {}
+
+//
+// Showdown namespace
+//
+Attacklab.showdown = Attacklab.showdown || {}
+
+//
+// converter
+//
+// Wraps all "globals" so that the only thing
+// exposed is makeHtml().
+//
+Attacklab.showdown.converter = function() {
+
+//
+// Globals:
+//
+
+// Global hashes, used by various utility routines
+var g_urls;
+var g_titles;
+var g_html_blocks;
+
+// Used to track when we're inside an ordered or unordered list
+// (see _ProcessListItems() for details):
+var g_list_level = 0;
+
+
+this.makeHtml = function(text) {
+//
+// Main function. The order in which other subs are called here is
+// essential. Link and image substitutions need to happen before
+// _EscapeSpecialCharsWithinTagAttributes(), so that any *'s or _'s in the <a>
+// and <img> tags get encoded.
+//
+
+	// Clear the global hashes. If we don't clear these, you get conflicts
+	// from other articles when generating a page which contains more than
+	// one article (e.g. an index page that shows the N most recent
+	// articles):
+	g_urls = new Array();
+	g_titles = new Array();
+	g_html_blocks = new Array();
+
+	// attacklab: Replace ~ with ~T
+	// This lets us use tilde as an escape char to avoid md5 hashes
+	// The choice of character is arbitray; anything that isn't
+    // magic in Markdown will work.
+	text = text.replace(/~/g,"~T");
+
+	// attacklab: Replace $ with ~D
+	// RegExp interprets $ as a special character
+	// when it's in a replacement string
+	text = text.replace(/\$/g,"~D");
+
+	// Standardize line endings
+	text = text.replace(/\r\n/g,"\n"); // DOS to Unix
+	text = text.replace(/\r/g,"\n"); // Mac to Unix
+
+	// Make sure text begins and ends with a couple of newlines:
+	text = "\n\n" + text + "\n\n";
+
+	// Convert all tabs to spaces.
+	text = _Detab(text);
+
+	// Strip any lines consisting only of spaces and tabs.
+	// This makes subsequent regexen easier to write, because we can
+	// match consecutive blank lines with /\n+/ instead of something
+	// contorted like /[ \t]*\n+/ .
+	text = text.replace(/^[ \t]+$/mg,"");
+
+	// Turn block-level HTML blocks into hash entries
+	text = _HashHTMLBlocks(text);
+
+	// Strip link definitions, store in hashes.
+	text = _StripLinkDefinitions(text);
+
+	text = _RunBlockGamut(text);
+
+	text = _UnescapeSpecialChars(text);
+
+	// attacklab: Restore dollar signs
+	text = text.replace(/~D/g,"$$");
+
+	// attacklab: Restore tildes
+	text = text.replace(/~T/g,"~");
+
+	return text;
+}
+
+var _StripLinkDefinitions = function(text) {
+//
+// Strips link definitions from text, stores the URLs and titles in
+// hash references.
+//
+
+	// Link defs are in the form: ^[id]: url "optional title"
+
+	/*
+		var text = text.replace(/
+				^[ ]{0,3}\[(.+)\]:  // id = $1  attacklab: g_tab_width - 1
+				  [ \t]*
+				  \n?				// maybe *one* newline
+				  [ \t]*
+				<?(\S+?)>?			// url = $2
+				  [ \t]*
+				  \n?				// maybe one newline
+				  [ \t]*
+				(?:
+				  (\n*)				// any lines skipped = $3 attacklab: lookbehind removed
+				  ["(]
+				  (.+?)				// title = $4
+				  [")]
+				  [ \t]*
+				)?					// title is optional
+				(?:\n+|$)
+			  /gm,
+			  function(){...});
+	*/
+	var text = text.replace(/^[ ]{0,3}\[(.+)\]:[ \t]*\n?[ \t]*<?(\S+?)>?[ \t]*\n?[ \t]*(?:(\n*)["(](.+?)[")][ \t]*)?(?:\n+|\Z)/gm,
+		function (wholeMatch,m1,m2,m3,m4) {
+			m1 = m1.toLowerCase();
+			g_urls[m1] = _EncodeAmpsAndAngles(m2);  // Link IDs are case-insensitive
+			if (m3) {
+				// Oops, found blank lines, so it's not a title.
+				// Put back the parenthetical statement we stole.
+				return m3+m4;
+			} else if (m4) {
+				g_titles[m1] = m4.replace(/"/g,"&quot;");
+			}
+			
+			// Completely remove the definition from the text
+			return "";
+		}
+	);
+
+	return text;
+}
+
+var _HashHTMLBlocks = function(text) {
+	// attacklab: Double up blank lines to reduce lookaround
+	text = text.replace(/\n/g,"\n\n");
+
+	// Hashify HTML blocks:
+	// We only want to do this for block-level HTML tags, such as headers,
+	// lists, and tables. That's because we still want to wrap <p>s around
+	// "paragraphs" that are wrapped in non-block-level tags, such as anchors,
+	// phrase emphasis, and spans. The list of tags we're looking for is
+	// hard-coded:
+	var block_tags_a = "p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del"
+	var block_tags_b = "p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math"
+
+	// First, look for nested blocks, e.g.:
+	//   <div>
+	//     <div>
+	//     tags for inner block must be indented.
+	//     </div>
+	//   </div>
+	//
+	// The outermost tags must start at the left margin for this to match, and
+	// the inner nested divs must be indented.
+	// We need to do this before the next, more liberal match, because the next
+	// match will start at the first `<div>` and stop at the first `</div>`.
+
+	// attacklab: This regex can be expensive when it fails.
+	/*
+		var text = text.replace(/
+		(						// save in $1
+			^					// start of line  (with /m)
+			<($block_tags_a)	// start tag = $2
+			\b					// word break
+								// attacklab: hack around khtml/pcre bug...
+			[^\r]*?\n			// any number of lines, minimally matching
+			</\2>				// the matching end tag
+			[ \t]*				// trailing spaces/tabs
+			(?=\n+)				// followed by a newline
+		)						// attacklab: there are sentinel newlines at end of document
+		/gm,function(){...}};
+	*/
+	text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del)\b[^\r]*?\n<\/\2>[ \t]*(?=\n+))/gm,hashElement);
+
+	//
+	// Now match more liberally, simply from `\n<tag>` to `</tag>\n`
+	//
+
+	/*
+		var text = text.replace(/
+		(						// save in $1
+			^					// start of line  (with /m)
+			<($block_tags_b)	// start tag = $2
+			\b					// word break
+								// attacklab: hack around khtml/pcre bug...
+			[^\r]*?				// any number of lines, minimally matching
+			.*</\2>				// the matching end tag
+			[ \t]*				// trailing spaces/tabs
+			(?=\n+)				// followed by a newline
+		)						// attacklab: there are sentinel newlines at end of document
+		/gm,function(){...}};
+	*/
+	text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math)\b[^\r]*?.*<\/\2>[ \t]*(?=\n+)\n)/gm,hashElement);
+
+	// Special case just for <hr />. It was easier to make a special case than
+	// to make the other regex more complicated.  
+
+	/*
+		text = text.replace(/
+		(						// save in $1
+			\n\n				// Starting after a blank line
+			[ ]{0,3}
+			(<(hr)				// start tag = $2
+			\b					// word break
+			([^<>])*?			// 
+			\/?>)				// the matching end tag
+			[ \t]*
+			(?=\n{2,})			// followed by a blank line
+		)
+		/g,hashElement);
+	*/
+	text = text.replace(/(\n[ ]{0,3}(<(hr)\b([^<>])*?\/?>)[ \t]*(?=\n{2,}))/g,hashElement);
+
+	// Special case for standalone HTML comments:
+
+	/*
+		text = text.replace(/
+		(						// save in $1
+			\n\n				// Starting after a blank line
+			[ ]{0,3}			// attacklab: g_tab_width - 1
+			<!
+			(--[^\r]*?--\s*)+
+			>
+			[ \t]*
+			(?=\n{2,})			// followed by a blank line
+		)
+		/g,hashElement);
+	*/
+	text = text.replace(/(\n\n[ ]{0,3}<!(--[^\r]*?--\s*)+>[ \t]*(?=\n{2,}))/g,hashElement);
+
+	// PHP and ASP-style processor instructions (<?...?> and <%...%>)
+
+	/*
+		text = text.replace(/
+		(?:
+			\n\n				// Starting after a blank line
+		)
+		(						// save in $1
+			[ ]{0,3}			// attacklab: g_tab_width - 1
+			(?:
+				<([?%])			// $2
+				[^\r]*?
+				\2>
+			)
+			[ \t]*
+			(?=\n{2,})			// followed by a blank line
+		)
+		/g,hashElement);
+	*/
+	text = text.replace(/(?:\n\n)([ ]{0,3}(?:<([?%])[^\r]*?\2>)[ \t]*(?=\n{2,}))/g,hashElement);
+
+	// attacklab: Undo double lines (see comment at top of this function)
+	text = text.replace(/\n\n/g,"\n");
+	return text;
+}
+
+var hashElement = function(wholeMatch,m1) {
+	var blockText = m1;
+
+	// Undo double lines
+	blockText = blockText.replace(/\n\n/g,"\n");
+	blockText = blockText.replace(/^\n/,"");
+	
+	// strip trailing blank lines
+	blockText = blockText.replace(/\n+$/g,"");
+	
+	// Replace the element text with a marker ("~KxK" where x is its key)
+	blockText = "\n\n~K" + (g_html_blocks.push(blockText)-1) + "K\n\n";
+	
+	return blockText;
+};
+
+var _RunBlockGamut = function(text) {
+//
+// These are all the transformations that form block-level
+// tags like paragraphs, headers, and list items.
+//
+	text = _DoHeaders(text);
+
+	// Do Horizontal Rules:
+	var key = hashBlock("<hr />");
+	text = text.replace(/^[ ]{0,2}([ ]?\*[ ]?){3,}[ \t]*$/gm,key);
+	text = text.replace(/^[ ]{0,2}([ ]?-[ ]?){3,}[ \t]*$/gm,key);
+	text = text.replace(/^[ ]{0,2}([ ]?_[ ]?){3,}[ \t]*$/gm,key);
+
+	text = _DoLists(text);
+	text = _DoCodeBlocks(text);
+	text = _DoBlockQuotes(text);
+
+	// We already ran _HashHTMLBlocks() before, in Markdown(), but that
+	// was to escape raw HTML in the original Markdown source. This time,
+	// we're escaping the markup we've just created, so that we don't wrap
+	// <p> tags around block-level tags.
+	text = _HashHTMLBlocks(text);
+	text = _FormParagraphs(text);
+
+	return text;
+}
+
+
+var _RunSpanGamut = function(text) {
+//
+// These are all the transformations that occur *within* block-level
+// tags like paragraphs, headers, and list items.
+//
+
+	text = _DoCodeSpans(text);
+	text = _EscapeSpecialCharsWithinTagAttributes(text);
+	text = _EncodeBackslashEscapes(text);
+
+	// Process anchor and image tags. Images must come first,
+	// because ![foo][f] looks like an anchor.
+	text = _DoImages(text);
+	text = _DoAnchors(text);
+
+	// Make links out of things like `<http://example.com/>`
+	// Must come after _DoAnchors(), because you can use < and >
+	// delimiters in inline links like [this](<url>).
+	text = _DoAutoLinks(text);
+	text = _EncodeAmpsAndAngles(text);
+	text = _DoItalicsAndBold(text);
+
+	// Do hard breaks:
+	text = text.replace(/  +\n/g," <br />\n");
+
+	return text;
+}
+
+var _EscapeSpecialCharsWithinTagAttributes = function(text) {
+//
+// Within tags -- meaning between < and > -- encode [\ ` * _] so they
+// don't conflict with their use in Markdown for code, italics and strong.
+//
+
+	// Build a regex to find HTML tags and comments.  See Friedl's 
+	// "Mastering Regular Expressions", 2nd Ed., pp. 200-201.
+	var regex = /(<[a-z\/!$]("[^"]*"|'[^']*'|[^'">])*>|<!(--.*?--\s*)+>)/gi;
+
+	text = text.replace(regex, function(wholeMatch) {
+		var tag = wholeMatch.replace(/(.)<\/?code>(?=.)/g,"$1`");
+		tag = escapeCharacters(tag,"\\`*_");
+		return tag;
+	});
+
+	return text;
+}
+
+var _DoAnchors = function(text) {
+//
+// Turn Markdown link shortcuts into XHTML <a> tags.
+//
+	//
+	// First, handle reference-style links: [link text] [id]
+	//
+
+	/*
+		text = text.replace(/
+		(							// wrap whole match in $1
+			\[
+			(
+				(?:
+					\[[^\]]*\]		// allow brackets nested one level
+					|
+					[^\[]			// or anything else
+				)*
+			)
+			\]
+
+			[ ]?					// one optional space
+			(?:\n[ ]*)?				// one optional newline followed by spaces
+
+			\[
+			(.*?)					// id = $3
+			\]
+		)()()()()					// pad remaining backreferences
+		/g,_DoAnchors_callback);
+	*/
+	text = text.replace(/(\[((?:\[[^\]]*\]|[^\[\]])*)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g,writeAnchorTag);
+
+	//
+	// Next, inline-style links: [link text](url "optional title")
+	//
+
+	/*
+		text = text.replace(/
+			(						// wrap whole match in $1
+				\[
+				(
+					(?:
+						\[[^\]]*\]	// allow brackets nested one level
+					|
+					[^\[\]]			// or anything else
+				)
+			)
+			\]
+			\(						// literal paren
+			[ \t]*
+			()						// no id, so leave $3 empty
+			<?(.*?)>?				// href = $4
+			[ \t]*
+			(						// $5
+				(['"])				// quote char = $6
+				(.*?)				// Title = $7
+				\6					// matching quote
+				[ \t]*				// ignore any spaces/tabs between closing quote and )
+			)?						// title is optional
+			\)
+		)
+		/g,writeAnchorTag);
+	*/
+	text = text.replace(/(\[((?:\[[^\]]*\]|[^\[\]])*)\]\([ \t]*()<?(.*?)>?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g,writeAnchorTag);
+
+	//
+	// Last, handle reference-style shortcuts: [link text]
+	// These must come last in case you've also got [link test][1]
+	// or [link test](/foo)
+	//
+
+	/*
+		text = text.replace(/
+		(		 					// wrap whole match in $1
+			\[
+			([^\[\]]+)				// link text = $2; can't contain '[' or ']'
+			\]
+		)()()()()()					// pad rest of backreferences
+		/g, writeAnchorTag);
+	*/
+	text = text.replace(/(\[([^\[\]]+)\])()()()()()/g, writeAnchorTag);
+
+	return text;
+}
+
+var writeAnchorTag = function(wholeMatch,m1,m2,m3,m4,m5,m6,m7) {
+	if (m7 == undefined) m7 = "";
+	var whole_match = m1;
+	var link_text   = m2;
+	var link_id	 = m3.toLowerCase();
+	var url		= m4;
+	var title	= m7;
+	
+	if (url == "") {
+		if (link_id == "") {
+			// lower-case and turn embedded newlines into spaces
+			link_id = link_text.toLowerCase().replace(/ ?\n/g," ");
+		}
+		url = "#"+link_id;
+		
+		if (g_urls[link_id] != undefined) {
+			url = g_urls[link_id];
+			if (g_titles[link_id] != undefined) {
+				title = g_titles[link_id];
+			}
+		}
+		else {
+			if (whole_match.search(/\(\s*\)$/m)>-1) {
+				// Special case for explicit empty url
+				url = "";
+			} else {
+				return whole_match;
+			}
+		}
+	}	
+	
+	url = escapeCharacters(url,"*_");
+	var result = "<a href=\"" + url + "\"";
+	
+	if (title != "") {
+		title = title.replace(/"/g,"&quot;");
+		title = escapeCharacters(title,"*_");
+		result +=  " title=\"" + title + "\"";
+	}
+	
+	result += ">" + link_text + "</a>";
+	
+	return result;
+}
+
+
+var _DoImages = function(text) {
+//
+// Turn Markdown image shortcuts into <img> tags.
+//
+
+	//
+	// First, handle reference-style labeled images: ![alt text][id]
+	//
+
+	/*
+		text = text.replace(/
+		(						// wrap whole match in $1
+			!\[
+			(.*?)				// alt text = $2
+			\]
+
+			[ ]?				// one optional space
+			(?:\n[ ]*)?			// one optional newline followed by spaces
+
+			\[
+			(.*?)				// id = $3
+			\]
+		)()()()()				// pad rest of backreferences
+		/g,writeImageTag);
+	*/
+	text = text.replace(/(!\[(.*?)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g,writeImageTag);
+
+	//
+	// Next, handle inline images:  ![alt text](url "optional title")
+	// Don't forget: encode * and _
+
+	/*
+		text = text.replace(/
+		(						// wrap whole match in $1
+			!\[
+			(.*?)				// alt text = $2
+			\]
+			\s?					// One optional whitespace character
+			\(					// literal paren
+			[ \t]*
+			()					// no id, so leave $3 empty
+			<?(\S+?)>?			// src url = $4
+			[ \t]*
+			(					// $5
+				(['"])			// quote char = $6
+				(.*?)			// title = $7
+				\6				// matching quote
+				[ \t]*
+			)?					// title is optional
+		\)
+		)
+		/g,writeImageTag);
+	*/
+	text = text.replace(/(!\[(.*?)\]\s?\([ \t]*()<?(\S+?)>?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g,writeImageTag);
+
+	return text;
+}
+
+var writeImageTag = function(wholeMatch,m1,m2,m3,m4,m5,m6,m7) {
+	var whole_match = m1;
+	var alt_text   = m2;
+	var link_id	 = m3.toLowerCase();
+	var url		= m4;
+	var title	= m7;
+
+	if (!title) title = "";
+	
+	if (url == "") {
+		if (link_id == "") {
+			// lower-case and turn embedded newlines into spaces
+			link_id = alt_text.toLowerCase().replace(/ ?\n/g," ");
+		}
+		url = "#"+link_id;
+		
+		if (g_urls[link_id] != undefined) {
+			url = g_urls[link_id];
+			if (g_titles[link_id] != undefined) {
+				title = g_titles[link_id];
+			}
+		}
+		else {
+			return whole_match;
+		}
+	}	
+	
+	alt_text = alt_text.replace(/"/g,"&quot;");
+	url = escapeCharacters(url,"*_");
+	var result = "<img src=\"" + url + "\" alt=\"" + alt_text + "\"";
+
+	// attacklab: Markdown.pl adds empty title attributes to images.
+	// Replicate this bug.
+
+	//if (title != "") {
+		title = title.replace(/"/g,"&quot;");
+		title = escapeCharacters(title,"*_");
+		result +=  " title=\"" + title + "\"";
+	//}
+	
+	result += " />";
+	
+	return result;
+}
+
+
+var _DoHeaders = function(text) {
+
+	// Setext-style headers:
+	//	Header 1
+	//	========
+	//  
+	//	Header 2
+	//	--------
+	//
+	text = text.replace(/^(.+)[ \t]*\n=+[ \t]*\n+/gm,
+		function(wholeMatch,m1){return hashBlock("<h1>" + _RunSpanGamut(m1) + "</h1>");});
+
+	text = text.replace(/^(.+)[ \t]*\n-+[ \t]*\n+/gm,
+		function(matchFound,m1){return hashBlock("<h2>" + _RunSpanGamut(m1) + "</h2>");});
+
+	// atx-style headers:
+	//  # Header 1
+	//  ## Header 2
+	//  ## Header 2 with closing hashes ##
+	//  ...
+	//  ###### Header 6
+	//
+
+	/*
+		text = text.replace(/
+			^(\#{1,6})				// $1 = string of #'s
+			[ \t]*
+			(.+?)					// $2 = Header text
+			[ \t]*
+			\#*						// optional closing #'s (not counted)
+			\n+
+		/gm, function() {...});
+	*/
+
+	text = text.replace(/^(\#{1,6})[ \t]*(.+?)[ \t]*\#*\n+/gm,
+		function(wholeMatch,m1,m2) {
+			var h_level = m1.length;
+			return hashBlock("<h" + h_level + ">" + _RunSpanGamut(m2) + "</h" + h_level + ">");
+		});
+
+	return text;
+}
+
+// This declaration keeps Dojo compressor from outputting garbage:
+var _ProcessListItems;
+
+var _DoLists = function(text) {
+//
+// Form HTML ordered (numbered) and unordered (bulleted) lists.
+//
+
+	// attacklab: add sentinel to hack around khtml/safari bug:
+	// http://bugs.webkit.org/show_bug.cgi?id=11231
+	text += "~0";
+
+	// Re-usable pattern to match any entirel ul or ol list:
+
+	/*
+		var whole_list = /
+		(									// $1 = whole list
+			(								// $2
+				[ ]{0,3}					// attacklab: g_tab_width - 1
+				([*+-]|\d+[.])				// $3 = first list item marker
+				[ \t]+
+			)
+			[^\r]+?
+			(								// $4
+				~0							// sentinel for workaround; should be $
+			|
+				\n{2,}
+				(?=\S)
+				(?!							// Negative lookahead for another list item marker
+					[ \t]*
+					(?:[*+-]|\d+[.])[ \t]+
+				)
+			)
+		)/g
+	*/
+	var whole_list = /^(([ ]{0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/gm;
+
+	if (g_list_level) {
+		text = text.replace(whole_list,function(wholeMatch,m1,m2) {
+			var list = m1;
+			var list_type = (m2.search(/[*+-]/g)>-1) ? "ul" : "ol";
+
+			// Turn double returns into triple returns, so that we can make a
+			// paragraph for the last item in a list, if necessary:
+			list = list.replace(/\n{2,}/g,"\n\n\n");;
+			var result = _ProcessListItems(list);
+	
+			// Trim any trailing whitespace, to put the closing `</$list_type>`
+			// up on the preceding line, to get it past the current stupid
+			// HTML block parser. This is a hack to work around the terrible
+			// hack that is the HTML block parser.
+			result = result.replace(/\s+$/,"");
+			result = "<"+list_type+">" + result + "</"+list_type+">\n";
+			return result;
+		});
+	} else {
+		whole_list = /(\n\n|^\n?)(([ ]{0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/g;
+		text = text.replace(whole_list,function(wholeMatch,m1,m2,m3) {
+			var runup = m1;
+			var list = m2;
+
+			var list_type = (m3.search(/[*+-]/g)>-1) ? "ul" : "ol";
+			// Turn double returns into triple returns, so that we can make a
+			// paragraph for the last item in a list, if necessary:
+			var list = list.replace(/\n{2,}/g,"\n\n\n");;
+			var result = _ProcessListItems(list);
+			result = runup + "<"+list_type+">\n" + result + "</"+list_type+">\n";	
+			return result;
+		});
+	}
+
+	// attacklab: strip sentinel
+	text = text.replace(/~0/,"");
+
+	return text;
+}
+
+_ProcessListItems = function(list_str) {
+//
+//  Process the contents of a single ordered or unordered list, splitting it
+//  into individual list items.
+//
+	// The $g_list_level global keeps track of when we're inside a list.
+	// Each time we enter a list, we increment it; when we leave a list,
+	// we decrement. If it's zero, we're not in a list anymore.
+	//
+	// We do this because when we're not inside a list, we want to treat
+	// something like this:
+	//
+	//    I recommend upgrading to version
+	//    8. Oops, now this line is treated
+	//    as a sub-list.
+	//
+	// As a single paragraph, despite the fact that the second line starts
+	// with a digit-period-space sequence.
+	//
+	// Whereas when we're inside a list (or sub-list), that line will be
+	// treated as the start of a sub-list. What a kludge, huh? This is
+	// an aspect of Markdown's syntax that's hard to parse perfectly
+	// without resorting to mind-reading. Perhaps the solution is to
+	// change the syntax rules such that sub-lists must start with a
+	// starting cardinal number; e.g. "1." or "a.".
+
+	g_list_level++;
+
+	// trim trailing blank lines:
+	list_str = list_str.replace(/\n{2,}$/,"\n");
+
+	// attacklab: add sentinel to emulate \z
+	list_str += "~0";
+
+	/*
+		list_str = list_str.replace(/
+			(\n)?							// leading line = $1
+			(^[ \t]*)						// leading whitespace = $2
+			([*+-]|\d+[.]) [ \t]+			// list marker = $3
+			([^\r]+?						// list item text   = $4
+			(\n{1,2}))
+			(?= \n* (~0 | \2 ([*+-]|\d+[.]) [ \t]+))
+		/gm, function(){...});
+	*/
+	list_str = list_str.replace(/(\n)?(^[ \t]*)([*+-]|\d+[.])[ \t]+([^\r]+?(\n{1,2}))(?=\n*(~0|\2([*+-]|\d+[.])[ \t]+))/gm,
+		function(wholeMatch,m1,m2,m3,m4){
+			var item = m4;
+			var leading_line = m1;
+			var leading_space = m2;
+
+			if (leading_line || (item.search(/\n{2,}/)>-1)) {
+				item = _RunBlockGamut(_Outdent(item));
+			}
+			else {
+				// Recursion for sub-lists:
+				item = _DoLists(_Outdent(item));
+				item = item.replace(/\n$/,""); // chomp(item)
+				item = _RunSpanGamut(item);
+			}
+
+			return  "<li>" + item + "</li>\n";
+		}
+	);
+
+	// attacklab: strip sentinel
+	list_str = list_str.replace(/~0/g,"");
+
+	g_list_level--;
+	return list_str;
+}
+
+
+var _DoCodeBlocks = function(text) {
+//
+//  Process Markdown `<pre><code>` blocks.
+//  
+
+	/*
+		text = text.replace(text,
+			/(?:\n\n|^)
+			(								// $1 = the code block -- one or more lines, starting with a space/tab
+				(?:
+					(?:[ ]{4}|\t)			// Lines must start with a tab or a tab-width of spaces - attacklab: g_tab_width
+					.*\n+
+				)+
+			)
+			(\n*[ ]{0,3}[^ \t\n]|(?=~0))	// attacklab: g_tab_width
+		/g,function(){...});
+	*/
+
+	// attacklab: sentinel workarounds for lack of \A and \Z, safari\khtml bug
+	text += "~0";
+	
+	text = text.replace(/(?:\n\n|^)((?:(?:[ ]{4}|\t).*\n+)+)(\n*[ ]{0,3}[^ \t\n]|(?=~0))/g,
+		function(wholeMatch,m1,m2) {
+			var codeblock = m1;
+			var nextChar = m2;
+		
+			codeblock = _EncodeCode( _Outdent(codeblock));
+			codeblock = _Detab(codeblock);
+			codeblock = codeblock.replace(/^\n+/g,""); // trim leading newlines
+			codeblock = codeblock.replace(/\n+$/g,""); // trim trailing whitespace
+
+			codeblock = "<pre><code>" + codeblock + "\n</code></pre>";
+
+			return hashBlock(codeblock) + nextChar;
+		}
+	);
+
+	// attacklab: strip sentinel
+	text = text.replace(/~0/,"");
+
+	return text;
+}
+
+var hashBlock = function(text) {
+	text = text.replace(/(^\n+|\n+$)/g,"");
+	return "\n\n~K" + (g_html_blocks.push(text)-1) + "K\n\n";
+}
+
+
+var _DoCodeSpans = function(text) {
+//
+//   *  Backtick quotes are used for <code></code> spans.
+// 
+//   *  You can use multiple backticks as the delimiters if you want to
+//	 include literal backticks in the code span. So, this input:
+//	 
+//		 Just type ``foo `bar` baz`` at the prompt.
+//	 
+//	   Will translate to:
+//	 
+//		 <p>Just type <code>foo `bar` baz</code> at the prompt.</p>
+//	 
+//	There's no arbitrary limit to the number of backticks you
+//	can use as delimters. If you need three consecutive backticks
+//	in your code, use four for delimiters, etc.
+//
+//  *  You can use spaces to get literal backticks at the edges:
+//	 
+//		 ... type `` `bar` `` ...
+//	 
+//	   Turns to:
+//	 
+//		 ... type <code>`bar`</code> ...
+//
+
+	/*
+		text = text.replace(/
+			(^|[^\\])					// Character before opening ` can't be a backslash
+			(`+)						// $2 = Opening run of `
+			(							// $3 = The code block
+				[^\r]*?
+				[^`]					// attacklab: work around lack of lookbehind
+			)
+			\2							// Matching closer
+			(?!`)
+		/gm, function(){...});
+	*/
+
+	text = text.replace(/(^|[^\\])(`+)([^\r]*?[^`])\2(?!`)/gm,
+		function(wholeMatch,m1,m2,m3,m4) {
+			var c = m3;
+			c = c.replace(/^([ \t]*)/g,"");	// leading whitespace
+			c = c.replace(/[ \t]*$/g,"");	// trailing whitespace
+			c = _EncodeCode(c);
+			return m1+"<code>"+c+"</code>";
+		});
+
+	return text;
+}
+
+
+var _EncodeCode = function(text) {
+//
+// Encode/escape certain characters inside Markdown code runs.
+// The point is that in code, these characters are literals,
+// and lose their special Markdown meanings.
+//
+	// Encode all ampersands; HTML entities are not
+	// entities within a Markdown code span.
+	text = text.replace(/&/g,"&amp;");
+
+	// Do the angle bracket song and dance:
+	text = text.replace(/</g,"&lt;");
+	text = text.replace(/>/g,"&gt;");
+
+	// Now, escape characters that are magic in Markdown:
+	text = escapeCharacters(text,"\*_{}[]\\",false);
+
+// jj the line above breaks this:
+//---
+
+//* Item
+
+//   1. Subitem
+
+//            special char: *
+//---
+
+	return text;
+}
+
+
+var _DoItalicsAndBold = function(text) {
+
+	// <strong> must go first:
+	text = text.replace(/(\*\*|__)(?=\S)([^\r]*?\S[\*_]*)\1/g,
+		"<strong>$2</strong>");
+
+	text = text.replace(/(\*|_)(?=\S)([^\r]*?\S)\1/g,
+		"<em>$2</em>");
+
+	return text;
+}
+
+
+var _DoBlockQuotes = function(text) {
+
+	/*
+		text = text.replace(/
+		(								// Wrap whole match in $1
+			(
+				^[ \t]*>[ \t]?			// '>' at the start of a line
+				.+\n					// rest of the first line
+				(.+\n)*					// subsequent consecutive lines
+				\n*						// blanks
+			)+
+		)
+		/gm, function(){...});
+	*/
+
+	text = text.replace(/((^[ \t]*>[ \t]?.+\n(.+\n)*\n*)+)/gm,
+		function(wholeMatch,m1) {
+			var bq = m1;
+
+			// attacklab: hack around Konqueror 3.5.4 bug:
+			// "----------bug".replace(/^-/g,"") == "bug"
+
+			bq = bq.replace(/^[ \t]*>[ \t]?/gm,"~0");	// trim one level of quoting
+
+			// attacklab: clean up hack
+			bq = bq.replace(/~0/g,"");
+
+			bq = bq.replace(/^[ \t]+$/gm,"");		// trim whitespace-only lines
+			bq = _RunBlockGamut(bq);				// recurse
+			
+			bq = bq.replace(/(^|\n)/g,"$1  ");
+			// These leading spaces screw with <pre> content, so we need to fix that:
+			bq = bq.replace(
+					/(\s*<pre>[^\r]+?<\/pre>)/gm,
+				function(wholeMatch,m1) {
+					var pre = m1;
+					// attacklab: hack around Konqueror 3.5.4 bug:
+					pre = pre.replace(/^  /mg,"~0");
+					pre = pre.replace(/~0/g,"");
+					return pre;
+				});
+			
+			return hashBlock("<blockquote>\n" + bq + "\n</blockquote>");
+		});
+	return text;
+}
+
+
+var _FormParagraphs = function(text) {
+//
+//  Params:
+//    $text - string to process with html <p> tags
+//
+
+	// Strip leading and trailing lines:
+	text = text.replace(/^\n+/g,"");
+	text = text.replace(/\n+$/g,"");
+
+	var grafs = text.split(/\n{2,}/g);
+	var grafsOut = new Array();
+
+	//
+	// Wrap <p> tags.
+	//
+	var end = grafs.length;
+	for (var i=0; i<end; i++) {
+		var str = grafs[i];
+
+		// if this is an HTML marker, copy it
+		if (str.search(/~K(\d+)K/g) >= 0) {
+			grafsOut.push(str);
+		}
+		else if (str.search(/\S/) >= 0) {
+			str = _RunSpanGamut(str);
+			str = str.replace(/^([ \t]*)/g,"<p>");
+			str += "</p>"
+			grafsOut.push(str);
+		}
+
+	}
+
+	//
+	// Unhashify HTML blocks
+	//
+	end = grafsOut.length;
+	for (var i=0; i<end; i++) {
+		// if this is a marker for an html block...
+		while (grafsOut[i].search(/~K(\d+)K/) >= 0) {
+			var blockText = g_html_blocks[RegExp.$1];
+			blockText = blockText.replace(/\$/g,"$$$$"); // Escape any dollar signs
+			grafsOut[i] = grafsOut[i].replace(/~K\d+K/,blockText);
+		}
+	}
+
+	return grafsOut.join("\n\n");
+}
+
+
+var _EncodeAmpsAndAngles = function(text) {
+// Smart processing for ampersands and angle brackets that need to be encoded.
+	
+	// Ampersand-encoding based entirely on Nat Irons's Amputator MT plugin:
+	//   http://bumppo.net/projects/amputator/
+	text = text.replace(/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/g,"&amp;");
+	
+	// Encode naked <'s
+	text = text.replace(/<(?![a-z\/?\$!])/gi,"&lt;");
+	
+	return text;
+}
+
+
+var _EncodeBackslashEscapes = function(text) {
+//
+//   Parameter:  String.
+//   Returns:	The string, with after processing the following backslash
+//			   escape sequences.
+//
+
+	// attacklab: The polite way to do this is with the new
+	// escapeCharacters() function:
+	//
+	// 	text = escapeCharacters(text,"\\",true);
+	// 	text = escapeCharacters(text,"`*_{}[]()>#+-.!",true);
+	//
+	// ...but we're sidestepping its use of the (slow) RegExp constructor
+	// as an optimization for Firefox.  This function gets called a LOT.
+
+	text = text.replace(/\\(\\)/g,escapeCharacters_callback);
+	text = text.replace(/\\([`*_{}\[\]()>#+-.!])/g,escapeCharacters_callback);
+	return text;
+}
+
+
+var _DoAutoLinks = function(text) {
+
+	text = text.replace(/<((https?|ftp|dict):[^'">\s]+)>/gi,"<a href=\"$1\">$1</a>");
+
+	// Email addresses: <address@domain.foo>
+
+	/*
+		text = text.replace(/
+			<
+			(?:mailto:)?
+			(
+				[-.\w]+
+				\@
+				[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+
+			)
+			>
+		/gi, _DoAutoLinks_callback());
+	*/
+	text = text.replace(/<(?:mailto:)?([-.\w]+\@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)>/gi,
+		function(wholeMatch,m1) {
+			return _EncodeEmailAddress( _UnescapeSpecialChars(m1) );
+		}
+	);
+
+	return text;
+}
+
+
+var _EncodeEmailAddress = function(addr) {
+//
+//  Input: an email address, e.g. "foo@example.com"
+//
+//  Output: the email address as a mailto link, with each character
+//	of the address encoded as either a decimal or hex entity, in
+//	the hopes of foiling most address harvesting spam bots. E.g.:
+//
+//	<a href="&#x6D;&#97;&#105;&#108;&#x74;&#111;:&#102;&#111;&#111;&#64;&#101;
+//	   x&#x61;&#109;&#x70;&#108;&#x65;&#x2E;&#99;&#111;&#109;">&#102;&#111;&#111;
+//	   &#64;&#101;x&#x61;&#109;&#x70;&#108;&#x65;&#x2E;&#99;&#111;&#109;</a>
+//
+//  Based on a filter by Matthew Wickline, posted to the BBEdit-Talk
+//  mailing list: <http://tinyurl.com/yu7ue>
+//
+
+	// attacklab: why can't javascript speak hex?
+	function char2hex(ch) {
+		var hexDigits = '0123456789ABCDEF';
+		var dec = ch.charCodeAt(0);
+		return(hexDigits.charAt(dec>>4) + hexDigits.charAt(dec&15));
+	}
+
+	var encode = [
+		function(ch){return "&#"+ch.charCodeAt(0)+";";},
+		function(ch){return "&#x"+char2hex(ch)+";";},
+		function(ch){return ch;}
+	];
+
+	addr = "mailto:" + addr;
+
+	addr = addr.replace(/./g, function(ch) {
+		if (ch == "@") {
+		   	// this *must* be encoded. I insist.
+			ch = encode[Math.floor(Math.random()*2)](ch);
+		} else if (ch !=":") {
+			// leave ':' alone (to spot mailto: later)
+			var r = Math.random();
+			// roughly 10% raw, 45% hex, 45% dec
+			ch =  (
+					r > .9  ?	encode[2](ch)   :
+					r > .45 ?	encode[1](ch)   :
+								encode[0](ch)
+				);
+		}
+		return ch;
+	});
+
+	addr = "<a href=\"" + addr + "\">" + addr + "</a>";
+	addr = addr.replace(/">.+:/g,"\">"); // strip the mailto: from the visible part
+
+	return addr;
+}
+
+
+var _UnescapeSpecialChars = function(text) {
+//
+// Swap back in all the special characters we've hidden.
+//
+	text = text.replace(/~E(\d+)E/g,
+		function(wholeMatch,m1) {
+			var charCodeToReplace = parseInt(m1);
+			return String.fromCharCode(charCodeToReplace);
+		}
+	);
+	return text;
+}
+
+
+var _Outdent = function(text) {
+//
+// Remove one level of line-leading tabs or spaces
+//
+
+	// attacklab: hack around Konqueror 3.5.4 bug:
+	// "----------bug".replace(/^-/g,"") == "bug"
+
+	text = text.replace(/^(\t|[ ]{1,4})/gm,"~0"); // attacklab: g_tab_width
+
+	// attacklab: clean up hack
+	text = text.replace(/~0/g,"")
+
+	return text;
+}
+
+var _Detab = function(text) {
+// attacklab: Detab's completely rewritten for speed.
+// In perl we could fix it by anchoring the regexp with \G.
+// In javascript we're less fortunate.
+
+	// expand first n-1 tabs
+	text = text.replace(/\t(?=\t)/g,"    "); // attacklab: g_tab_width
+
+	// replace the nth with two sentinels
+	text = text.replace(/\t/g,"~A~B");
+
+	// use the sentinel to anchor our regex so it doesn't explode
+	text = text.replace(/~B(.+?)~A/g,
+		function(wholeMatch,m1,m2) {
+			var leadingText = m1;
+			var numSpaces = 4 - leadingText.length % 4;  // attacklab: g_tab_width
+
+			// there *must* be a better way to do this:
+			for (var i=0; i<numSpaces; i++) leadingText+=" ";
+
+			return leadingText;
+		}
+	);
+
+	// clean up sentinels
+	text = text.replace(/~A/g,"    ");  // attacklab: g_tab_width
+	text = text.replace(/~B/g,"");
+
+	return text;
+}
+
+
+//
+//  attacklab: Utility functions
+//
+
+
+var escapeCharacters = function(text, charsToEscape, afterBackslash) {
+	// First we have to escape the escape characters so that
+	// we can build a character class out of them
+	var regexString = "([" + charsToEscape.replace(/([\[\]\\])/g,"\\$1") + "])";
+
+	if (afterBackslash) {
+		regexString = "\\\\" + regexString;
+	}
+
+	var regex = new RegExp(regexString,"g");
+	text = text.replace(regex,escapeCharacters_callback);
+
+	return text;
+}
+
+
+var escapeCharacters_callback = function(wholeMatch,m1) {
+	var charCodeToEscape = m1.charCodeAt(0);
+	return "~E"+charCodeToEscape+"E";
+}
+
+} // end of Attacklab.showdown.converter
+
+
+// Version 0.9 used the Showdown namespace instead of Attacklab.showdown
+// The old namespace is deprecated, but we'll support it for now:
+var Showdown = Attacklab.showdown;
+
+// If anyone's interested, tell the world that this file's been loaded
+if (Attacklab.fileLoaded) {
+	Attacklab.fileLoaded("showdown.js");
+}
\ No newline at end of file
diff --git a/templates/content/js/wmd/wmd-min.js b/templates/content/js/wmd/wmd-min.js
new file mode 100644
index 00000000..85cbd907
--- /dev/null
+++ b/templates/content/js/wmd/wmd-min.js
@@ -0,0 +1 @@
+var Attacklab=Attacklab||{};Attacklab.wmdBase=function(){var y=top.Attacklab;var E=top.document;var s=top.RegExp;var l=top.navigator;y.Util={};y.Position={};y.Command={};y.Global={};var a=y.Util;var C=y.Position;var h=y.Command;var v=y.Global;v.isIE=/msie/.test(l.userAgent.toLowerCase());v.isIE_5or6=/msie 6/.test(l.userAgent.toLowerCase())||/msie 5/.test(l.userAgent.toLowerCase());v.isIE_7plus=v.isIE&&!v.isIE_5or6;v.isOpera=/opera/.test(l.userAgent.toLowerCase());v.isKonqueror=/konqueror/.test(l.userAgent.toLowerCase());var c="粗体 <strong> Ctrl-B";var f="斜体 <em> Ctrl-I";var z="超链接 <a> Ctrl-L";var u="引用 <blockquote> Ctrl-.";var e="代码 <pre><code> Ctrl-K";var d="图片 <img> Ctrl-G";var q="数字编号列表 <ol> Ctrl-O";var t="项目符号列表 <ul> Ctrl-U";var i="标题 <h1>/<h2> Ctrl-H";var p="水平线 <hr> Ctrl-R";var m="撤销 Ctrl-Z";var j="重做 Ctrl-Y";var B="<p style='margin-top: 0px'><b>输入图片地址</b></p><p>示例：<br />http://www.cnprog.com/images/temp.jpg   \"我的截图\"</p>";var D="<p style='margin-top: 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\t]+.*\n$/.test(F.before)){if(h.doBlockquote){h.doBlockquote(F)}}if(/(\n|^)(\t|[ ]{4,}).*\n$/.test(F.before)){if(h.doCode){h.doCode(F)}}};h.doBlockquote=function(F,G){F.selection=F.selection.replace(/^(\n*)([^\r]+?)(\n*)$/,function(L,K,J,I){F.before+=K;F.after=I+F.after;return J});F.before=F.before.replace(/(>[ \t]*)$/,function(J,I){F.selection=I+F.selection;return""});F.selection=F.selection.replace(/^(\s|>)+$/,"");F.selection=F.selection||"Blockquote";if(F.before){F.before=F.before.replace(/\n?$/,"\n")}if(F.after){F.after=F.after.replace(/^\n?/,"\n")}F.before=F.before.replace(/(((\n|^)(\n[ \t]*)*>(.+\n)*.*)+(\n[ \t]*)*$)/,function(I){F.startTag=I;return""});F.after=F.after.replace(/^(((\n|^)(\n[ \t]*)*>(.+\n)*.*)+(\n[ \t]*)*)/,function(I){F.endTag=I;return""});var H=function(J){var I=J?"> ":"";if(F.startTag){F.startTag=F.startTag.replace(/\n((>|\s)*)\n$/,function(L,K){return"\n"+K.replace(/^[ ]{0,3}>?[ \t]*$/gm,I)+"\n"})}if(F.endTag){F.endTag=F.endTag.replace(/^\n((>|\s)*)\n/,function(L,K){return"\n"+K.replace(/^[ ]{0,3}>?[ \t]*$/gm,I)+"\n"})}};if(/^(?![ ]{0,3}>)/m.test(F.selection)){h.wrap(F,y.wmd_env.lineLength-2);F.selection=F.selection.replace(/^/gm,"> ");H(true);F.skipLines()}else{F.selection=F.selection.replace(/^[ ]{0,3}> ?/gm,"");h.unwrap(F);H(false);if(!/^(\n|^)[ ]{0,3}>/.test(F.selection)&&F.startTag){F.startTag=F.startTag.replace(/\n{0,2}$/,"\n\n")}if(!/(\n|^)[ ]{0,3}>.*$/.test(F.selection)&&F.endTag){F.endTag=F.endTag.replace(/^\n{0,2}/,"\n\n")}}if(!/\n/.test(F.selection)){F.selection=F.selection.replace(/^(> *)/,function(I,J){F.startTag+=J;return""})}};h.doCode=function(F,G){var I=/\S[ ]*$/.test(F.before);var K=/^[ ]*\S/.test(F.after);if((!K&&!I)||/\n/.test(F.selection)){F.before=F.before.replace(/[ ]{4}$/,function(L){F.selection=L+F.selection;return""});var J=1;var H=1;if(/\n(\t|[ ]{4,}).*\n$/.test(F.before)){J=0}if(/^\n(\t|[ ]{4,})/.test(F.after)){H=0}F.skipLines(J,H);if(!F.selection){F.startTag="    ";F.selection="enter code here"}else{if(/^[ ]{0,3}\S/m.test(F.selection)){F.selection=F.selection.replace(/^/gm,"    ")}else{F.selection=F.selection.replace(/^[ ]{4}/gm,"")}}}else{F.trimWhitespace();F.findTags(/`/,/`/);if(!F.startTag&&!F.endTag){F.startTag=F.endTag="`";if(!F.selection){F.selection="enter code here"}}else{if(F.endTag&&!F.startTag){F.before+=F.endTag;F.endTag=""}else{F.startTag=F.endTag=""}}}};h.doList=function(Q,J,I){var S=/(\n|^)(([ ]{0,3}([*+-]|\d+[.])[ \t]+.*)(\n.+|\n{2,}([*+-].*|\d+[.])[ \t]+.*|\n{2,}[ \t]+\S.*)*)\n*$/;var R=/^\n*(([ ]{0,3}([*+-]|\d+[.])[ \t]+.*)(\n.+|\n{2,}([*+-].*|\d+[.])[ \t]+.*|\n{2,}[ \t]+\S.*)*)\n*/;var F="-";var N=1;var L=function(){var T;if(I){T=" "+N+". ";N++}else{T=" "+F+" "}return T};var M=function(T){if(I===undefined){I=/^\s*\d/.test(T)}T=T.replace(/^[ ]{0,3}([*+-]|\d+[.])\s/gm,function(U){return L()});return T};Q.findTags(/(\n|^)*[ ]{0,3}([*+-]|\d+[.])\s+/,null);if(Q.before&&!/\n$/.test(Q.before)&&!/^\n/.test(Q.startTag)){Q.before+=Q.startTag;Q.startTag=""}if(Q.startTag){var H=/\d+[.]/.test(Q.startTag);Q.startTag="";Q.selection=Q.selection.replace(/\n[ ]{4}/g,"\n");h.unwrap(Q);Q.skipLines();if(H){Q.after=Q.after.replace(R,M)}if(I==H){return}}var K=1;Q.before=Q.before.replace(S,function(T){if(/^\s*([*+-])/.test(T)){F=s.$1}K=/[^\n]\n\n[^\n]/.test(T)?1:0;return M(T)});if(!Q.selection){Q.selection="List item"}var O=L();var G=1;Q.after=Q.after.replace(R,function(T){G=/[^\n]\n\n[^\n]/.test(T)?1:0;return M(T)});Q.trimWhitespace(true);Q.skipLines(K,G,true);Q.startTag=O;var P=O.replace(/./g," ");h.wrap(Q,y.wmd_env.lineLength-P.length);Q.selection=Q.selection.replace(/\n/g,"\n"+P)};h.doHeading=function(H,I){H.selection=H.selection.replace(/\s+/g," ");H.selection=H.selection.replace(/(^\s+|\s+$)/g,"");if(!H.selection){H.startTag="## ";H.selection="Heading";H.endTag=" ##";return}var J=0;H.findTags(/#+[ ]*/,/[ ]*#+/);if(/#+/.test(H.startTag)){J=s.lastMatch.length}H.startTag=H.endTag="";H.findTags(null,/\s?(-+|=+)/);if(/=+/.test(H.endTag)){J=1}if(/-+/.test(H.endTag)){J=2}H.startTag=H.endTag="";H.skipLines(1,1);var K=J==0?2:J-1;if(K>0){var G=K>=2?"-":"=";var F=H.selection.length;if(F>y.wmd_env.lineLength){F=y.wmd_env.lineLength}H.endTag="\n";while(F--){H.endTag+=G}}};h.doHorizontalRule=function(F,G){F.startTag="----------\n";F.selection="";F.skipLines(2,1,true)}};Attacklab.wmd_env={};Attacklab.account_options={};Attacklab.wmd_defaults={version:1,output:"Markdown",lineLength:40,delayLoad:false};if(!Attacklab.wmd){Attacklab.wmd=function(){Attacklab.loadEnv=function(){var b=function(d){if(!d){return}for(var c in d){Attacklab.wmd_env[c]=d[c]}};b(Attacklab.wmd_defaults);b(Attacklab.account_options);b(top.wmd_options);Attacklab.full=true;var a="bold italic link blockquote code image ol ul heading hr";Attacklab.wmd_env.buttons=Attacklab.wmd_env.buttons||a};Attacklab.loadEnv()};Attacklab.wmd();Attacklab.wmdBase();Attacklab.Util.startEditor()};
\ No newline at end of file
diff --git a/templates/content/js/wmd/wmd-test.html b/templates/content/js/wmd/wmd-test.html
new file mode 100644
index 00000000..d748501a
--- /dev/null
+++ b/templates/content/js/wmd/wmd-test.html
@@ -0,0 +1,158 @@
+<!DOCTYPE html>
+<html>
+
+	<head>
+		<title>Test WMD Page</title>
+		
+		<link rel="stylesheet" type="text/css" href="wmd.css" />
+		
+		<meta http-equiv="pragma" content="no-cache">
+		<meta http-equiv="cache-control" content="no-cache">
+		<meta http-equiv="pragma-directive" content="no-cache">
+		<meta http-equiv="cache-directive" content="no-cache">
+		<meta http-equiv="expires" content="0">
+		
+		<script type="text/javascript" src="jQuery/jquery-1.2.6.js"></script>
+		<script type="text/javascript" src="showdown.js"></script>
+	</head>
+	
+	<body>
+		<div id="wmd-button-bar" class="wmd-panel"></div>
+		<br/>
+		<textarea id="editor" class="wmd-panel"></textarea>
+		<br/>
+		<div id="previewer" class="wmd-panel"></div>
+		<br/>
+		<div id="wmd-output" class="wmd-panel"></div>	
+		
+		<p>To test that page up/down and arrow keys work, copy this above the WMD
+		control.</p>
+		
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+		Scroll Down!<br/>
+
+		<script type="text/javascript" src="wmd.js"></script>
+	</body>
+</html>
\ No newline at end of file
diff --git a/templates/content/js/wmd/wmd.css b/templates/content/js/wmd/wmd.css
new file mode 100644
index 00000000..80c226c8
--- /dev/null
+++ b/templates/content/js/wmd/wmd.css
@@ -0,0 +1,129 @@
+/*body 
+{ 
+	background-color: White
+}
+*/
+.wmd-panel
+{
+}
+
+#wmd-button-bar 
+{
+	background-color: White; 
+}
+
+#wmd-input 
+{ 
+	height: 500px;
+	background-color: Gainsboro;
+	border: 1px solid DarkGray;
+	margin-top: -20px;
+}
+
+#wmd-preview 
+{ 
+	background-color: LightSkyBlue; 
+}
+
+#wmd-output 
+{ 
+	background-color: Pink;
+}
+
+#wmd-button-row 
+{
+	position: relative; 
+	margin-left: 5px;
+	margin-right: 5px;
+	margin-bottom: 5px;
+	margin-top: 10px;
+	padding: 0px;  
+	height: 20px;
+}
+
+.wmd-spacer
+{
+	width: 1px; 
+	height: 20px; 
+	margin-left: 14px;
+	
+	position: absolute;
+	background-color: Silver;
+	display: inline-block; 
+	list-style: none;
+}
+
+.wmd-button
+{
+	width: 20px; 
+	height: 20px; 
+	margin-left: 5px;
+	margin-right: 5px;
+	
+	position: absolute;
+	background-image: url(images/wmd-buttons.png);
+	background-repeat: no-repeat;
+	background-position: 0px 0px;
+	display: inline-block; 
+	list-style: none;
+}
+
+.wmd-button > a
+{
+	width: 20px; 
+	height: 20px; 
+	margin-left: 5px;
+	margin-right: 5px;
+	
+	position: absolute;
+	display: inline-block; 
+}
+
+
+/* sprite button slicing style information */
+#wmd-button-bar #wmd-bold-button    {left: 0px;   background-position: 0px 0;}
+#wmd-button-bar #wmd-italic-button  {left: 25px;  background-position: -20px 0;}
+#wmd-button-bar #wmd-spacer1        {left: 50px;}
+#wmd-button-bar #wmd-link-button    {left: 75px;  background-position: -40px 0;}
+#wmd-button-bar #wmd-quote-button   {left: 100px;  background-position: -60px 0;}
+#wmd-button-bar #wmd-code-button    {left: 125px;  background-position: -80px 0;}
+#wmd-button-bar #wmd-image-button   {left: 150px;  background-position: -100px 0;}
+#wmd-button-bar #wmd-spacer2        {left: 175px;}
+#wmd-button-bar #wmd-olist-button   {left: 200px;  background-position: -120px 0;}
+#wmd-button-bar #wmd-ulist-button   {left: 225px; background-position: -140px 0;}
+#wmd-button-bar #wmd-heading-button {left: 250px; background-position: -160px 0;}
+#wmd-button-bar #wmd-hr-button      {left: 275px; background-position: -180px 0;}
+#wmd-button-bar #wmd-spacer3        {left: 300px;}
+#wmd-button-bar #wmd-undo-button    {left: 325px; background-position: -200px 0;}
+#wmd-button-bar #wmd-redo-button    {left: 350px; background-position: -220px 0;}
+#wmd-button-bar #wmd-help-button    {right: 0px; background-position: -240px 0;}
+
+
+.wmd-prompt-background
+{
+	background-color: Black;
+}
+
+.wmd-prompt-dialog
+{
+	border: 1px solid #999999;
+	background-color: #F5F5F5;
+}
+
+.wmd-prompt-dialog > div {
+	font-size: 1em;
+	font-family: arial, helvetica, sans-serif;
+}
+
+
+.wmd-prompt-dialog > form > input[type="text"] {
+	border: 1px solid #999999;
+	color: black;
+}
+
+.wmd-prompt-dialog > form > input[type="button"]{
+	border: 1px solid #888888;
+	font-family: trebuchet MS, helvetica, sans-serif;
+	font-size: 1em;
+	font-weight: bold;
+}
diff --git a/templates/content/js/wmd/wmd.js b/templates/content/js/wmd/wmd.js
new file mode 100644
index 00000000..d83780d6
--- /dev/null
+++ b/templates/content/js/wmd/wmd.js
@@ -0,0 +1,2390 @@
+var Attacklab = Attacklab || {};
+
+Attacklab.wmdBase = function(){
+
+	// A few handy aliases for readability.
+	var wmd  = top.Attacklab;
+	var doc  = top.document;
+	var re   = top.RegExp;
+	var nav  = top.navigator;
+	
+	// Some namespaces.
+	wmd.Util = {};
+	wmd.Position = {};
+	wmd.Command = {};
+	wmd.Global = {};
+	
+	var util = wmd.Util;
+	var position = wmd.Position;
+	var command = wmd.Command;
+	var global = wmd.Global;
+	
+	
+	// Used to work around some browser bugs where we can't use feature testing.
+	global.isIE 		= /msie/.test(nav.userAgent.toLowerCase());
+	global.isIE_5or6 	= /msie 6/.test(nav.userAgent.toLowerCase()) || /msie 5/.test(nav.userAgent.toLowerCase());
+	global.isIE_7plus 	= global.isIE && !global.isIE_5or6;
+	global.isOpera 		= /opera/.test(nav.userAgent.toLowerCase());
+	global.isKonqueror 	= /konqueror/.test(nav.userAgent.toLowerCase());
+	
+	var toolbar_strong_label = "粗体 <strong> Ctrl-B";
+    var toolbar_emphasis_label = "斜体 <em> Ctrl-I";
+    var toolbar_hyperlink_label = "超链接 <a> Ctrl-L";
+    var toolbar_blockquote_label = "引用 <blockquote> Ctrl-.";
+    var toolbar_code_label = "代码 <pre><code> Ctrl-K";
+    var toolbar_image_label = "图片 <img> Ctrl-G";
+    var toolbar_numbered_label = "数字编号列表 <ol> Ctrl-O";
+    var toolbar_bulleted_label = "项目符号列表 <ul> Ctrl-U";
+    var toolbar_heading_label = "标题 <h1>/<h2> Ctrl-H";
+    var toolbar_horizontal_label = "水平线 <hr> Ctrl-R";
+    var toolbar_undo_label = "撤销 Ctrl-Z";
+    var toolbar_redo_label = "重做 Ctrl-Y";
+    
+	// -------------------------------------------------------------------
+	//  YOUR CHANGES GO HERE
+	//
+	// I've tried to localize the things you are likely to change to 
+	// this area.
+	// -------------------------------------------------------------------
+	
+	// The text that appears on the upper part of the dialog box when
+	// entering links.
+	var imageDialogText = "<p style='margin-top: 0px'><b>输入图片地址</b></p><p>示例：<br />"+
+    "http://www.cnprog.com/images/temp.jpg   \"我的截图\"</p>";
+	var linkDialogText = "<p style='margin-top: 0px'><b>输入Web地址</b></p><p>示例：<br />"+
+        "http://www.cnprog.com/   \"我的网站\"</p>";
+	var uploadImageHTML ="<div>或者上传本地图片：</div>" + 
+        "<input type=\"file\" name=\"file-upload\" id=\"file-upload\" size=\"26\" "+
+        "onchange=\"return ajaxFileUpload($('#image-url'));\"/><br>" + 
+        "<img id=\"loading\" src=\"/content/images/indicator.gif\" style=\"display:none;\"/>";
+    
+	// The default text that appears in the dialog input box when entering
+	// links.
+	var imageDefaultText = "http://";
+	var linkDefaultText = "http://";
+	
+	// The location of your button images relative to the base directory.
+	var imageDirectory = "images/";
+	
+	// Some intervals in ms.  These can be adjusted to reduce the control's load.
+	var previewPollInterval = 500;
+	var pastePollInterval = 100;
+	
+	// The link and title for the help button
+	var helpLink = "http://wmd-editor.com/";
+	var helpHoverTitle = "WMD website";
+	var helpTarget = "_blank";
+	
+	// -------------------------------------------------------------------
+	//  END OF YOUR CHANGES
+	// -------------------------------------------------------------------
+	
+	// A collection of the important regions on the page.
+	// Cached so we don't have to keep traversing the DOM.
+	wmd.PanelCollection = function(){
+		this.buttonBar = doc.getElementById("wmd-button-bar");
+		this.preview = doc.getElementById("previewer");
+		this.output = doc.getElementById("wmd-output");
+		this.input = doc.getElementById("editor");
+	};
+	
+	// This PanelCollection object can't be filled until after the page
+	// has loaded.
+	wmd.panels = undefined;
+	
+	// Internet explorer has problems with CSS sprite buttons that use HTML
+	// lists.  When you click on the background image "button", IE will 
+	// select the non-existent link text and discard the selection in the
+	// textarea.  The solution to this is to cache the textarea selection
+	// on the button's mousedown event and set a flag.  In the part of the
+	// code where we need to grab the selection, we check for the flag
+	// and, if it's set, use the cached area instead of querying the
+	// textarea.
+	//
+	// This ONLY affects Internet Explorer (tested on versions 6, 7
+	// and 8) and ONLY on button clicks.  Keyboard shortcuts work
+	// normally since the focus never leaves the textarea.
+	wmd.ieCachedRange = null;		// cached textarea selection
+	wmd.ieRetardedClick = false;	// flag
+	
+	// Returns true if the DOM element is visible, false if it's hidden.
+	// Checks if display is anything other than none.
+	util.isVisible = function (elem) {
+	
+	    if (window.getComputedStyle) {
+	        // Most browsers
+			return window.getComputedStyle(elem, null).getPropertyValue("display") !== "none";
+		}
+		else if (elem.currentStyle) {
+		    // IE
+			return elem.currentStyle["display"] !== "none";
+		}
+	};
+	
+	
+	// Adds a listener callback to a DOM element which is fired on a specified
+	// event.
+	util.addEvent = function(elem, event, listener){
+		if (elem.attachEvent) {
+			// IE only.  The "on" is mandatory.
+			elem.attachEvent("on" + event, listener);
+		}
+		else {
+			// Other browsers.
+			elem.addEventListener(event, listener, false);
+		}
+	};
+
+	
+	// Removes a listener callback from a DOM element which is fired on a specified
+	// event.
+	util.removeEvent = function(elem, event, listener){
+		if (elem.detachEvent) {
+			// IE only.  The "on" is mandatory.
+			elem.detachEvent("on" + event, listener);
+		}
+		else {
+			// Other browsers.
+			elem.removeEventListener(event, listener, false);
+		}
+	};
+
+	// Converts \r\n and \r to \n.
+	util.fixEolChars = function(text){
+		text = text.replace(/\r\n/g, "\n");
+		text = text.replace(/\r/g, "\n");
+		return text;
+	};
+
+	// Extends a regular expression.  Returns a new RegExp
+	// using pre + regex + post as the expression.
+	// Used in a few functions where we have a base
+	// expression and we want to pre- or append some
+	// conditions to it (e.g. adding "$" to the end).
+	// The flags are unchanged.
+	//
+	// regex is a RegExp, pre and post are strings.
+	util.extendRegExp = function(regex, pre, post){
+		
+		if (pre === null || pre === undefined)
+		{
+			pre = "";
+		}
+		if(post === null || post === undefined)
+		{
+			post = "";
+		}
+		
+		var pattern = regex.toString();
+		var flags;
+		
+		// Replace the flags with empty space and store them.
+		pattern = pattern.replace(/\/([gim]*)$/, "");
+		flags = re.$1;
+		
+		// Remove the slash delimiters on the regular expression.
+		pattern = pattern.replace(/(^\/|\/$)/g, "");
+		pattern = pre + pattern + post;
+		
+		return new re(pattern, flags);
+	}
+
+	
+	// Sets the image for a button passed to the WMD editor.
+	// Returns a new element with the image attached.
+	// Adds several style properties to the image.
+	util.createImage = function(img){
+		
+		var imgPath = imageDirectory + img;
+		
+		var elem = doc.createElement("img");
+		elem.className = "wmd-button";
+		elem.src = imgPath;
+
+		return elem;
+	};
+	
+
+	// This simulates a modal dialog box and asks for the URL when you
+	// click the hyperlink or image buttons.
+	//
+	// text: The html for the input box.
+	// defaultInputText: The default value that appears in the input box.
+	// makeLinkMarkdown: The function which is executed when the prompt is dismissed, either via OK or Cancel
+	util.prompt = function(text, defaultInputText, makeLinkMarkdown){
+	
+		// These variables need to be declared at this level since they are used
+		// in multiple functions.
+		var dialog;			// The dialog box.
+		var background;		// The background beind the dialog box.
+		var input;			// The text box where you enter the hyperlink.
+        var type = 0;
+        // The dialog box type(0: Link, 1: Image)
+        if(arguments.length == 4)
+            type = arguments[3];
+
+		if (defaultInputText === undefined) {
+			defaultInputText = "";
+		}
+		
+		// Used as a keydown event handler. Esc dismisses the prompt.
+		// Key code 27 is ESC.
+		var checkEscape = function(key){
+			var code = (key.charCode || key.keyCode);
+			if (code === 27) {
+				close(true);
+			}
+		};
+		
+		// Dismisses the hyperlink input box.
+		// isCancel is true if we don't care about the input text.
+		// isCancel is false if we are going to keep the text.
+		var close = function(isCancel){
+			util.removeEvent(doc.body, "keydown", checkEscape);
+			var text = input.value;
+
+			if (isCancel){
+				text = null;
+			}
+			else{
+				// Fixes common pasting errors.
+				text = text.replace('http://http://', 'http://');
+				text = text.replace('http://https://', 'https://');
+				text = text.replace('http://ftp://', 'ftp://');
+				
+				if (text.indexOf('http://') === -1 && text.indexOf('ftp://') === -1) {
+					text = 'http://' + text;
+				}
+			}
+			
+			dialog.parentNode.removeChild(dialog);
+			background.parentNode.removeChild(background);
+			makeLinkMarkdown(text);
+			return false;
+		};
+		
+		// Creates the background behind the hyperlink text entry box.
+		// Most of this has been moved to CSS but the div creation and
+		// browser-specific hacks remain here.
+		var createBackground = function(){
+		
+			background = doc.createElement("div");
+			background.className = "wmd-prompt-background";
+			style = background.style;
+			style.position = "absolute";
+			style.top = "0";
+			
+			style.zIndex = "1000";
+			
+			// Some versions of Konqueror don't support transparent colors
+			// so we make the whole window transparent.
+			//
+			// Is this necessary on modern konqueror browsers?
+			if (global.isKonqueror){
+				style.backgroundColor = "transparent";
+			}
+			else if (global.isIE){
+				style.filter = "alpha(opacity=50)";
+			}
+			else {
+				style.opacity = "0.5";
+			}
+			
+			var pageSize = position.getPageSize();
+			style.height = pageSize[1] + "px";
+			
+			if(global.isIE){
+				style.left = doc.documentElement.scrollLeft;
+				style.width = doc.documentElement.clientWidth;
+			}
+			else {
+				style.left = "0";
+				style.width = "100%";
+			}
+			
+			doc.body.appendChild(background);
+		};
+		
+		// Create the text input box form/window.
+		var createDialog = function(){
+		
+			// The main dialog box.
+			dialog = doc.createElement("div");
+			dialog.className = "wmd-prompt-dialog";
+			dialog.style.padding = "10px;";
+			dialog.style.position = "fixed";
+			dialog.style.width = "400px";
+			dialog.style.zIndex = "1001";
+			
+			// The dialog text.
+			var question = doc.createElement("div");
+			question.innerHTML = text;
+			question.style.padding = "5px";
+			dialog.appendChild(question);
+			
+			// The web form container for the text box and buttons.
+			var form = doc.createElement("form");
+			form.onsubmit = function(){ return close(false); };
+			style = form.style;
+			style.padding = "0";
+			style.margin = "0";
+			style.cssFloat = "left";
+			style.width = "100%";
+			style.textAlign = "center";
+			style.position = "relative";
+			dialog.appendChild(form);
+			
+			// The input text box
+			input = doc.createElement("input");
+            if(type == 1)
+                input.id = "image-url";
+			input.type = "text";
+			input.value = defaultInputText;
+			style = input.style;
+			style.display = "block";
+			style.width = "80%";
+			style.marginLeft = style.marginRight = "auto";
+			form.appendChild(input);
+			
+            // The upload file input
+            if(type == 1){
+                var upload = doc.createElement("div");
+    			upload.innerHTML = uploadImageHTML;
+    			upload.style.padding = "5px";
+    			form.appendChild(upload);   
+            }
+            
+			// The ok button
+			var okButton = doc.createElement("input");
+			okButton.type = "button";
+			okButton.onclick = function(){ return close(false); };
+			okButton.value = "OK";
+			style = okButton.style;
+			style.margin = "10px";
+			style.display = "inline";
+			style.width = "7em";
+
+			
+			// The cancel button
+			var cancelButton = doc.createElement("input");
+			cancelButton.type = "button";
+			cancelButton.onclick = function(){ return close(true); };
+			cancelButton.value = "Cancel";
+			style = cancelButton.style;
+			style.margin = "10px";
+			style.display = "inline";
+			style.width = "7em";
+
+			// The order of these buttons is different on macs.
+			if (/mac/.test(nav.platform.toLowerCase())) {
+				form.appendChild(cancelButton);
+				form.appendChild(okButton);
+			}
+			else {
+				form.appendChild(okButton);
+				form.appendChild(cancelButton);
+			}
+
+			util.addEvent(doc.body, "keydown", checkEscape);
+			dialog.style.top = "50%";
+			dialog.style.left = "50%";
+			dialog.style.display = "block";
+			if(global.isIE_5or6){
+				dialog.style.position = "absolute";
+				dialog.style.top = doc.documentElement.scrollTop + 200 + "px";
+				dialog.style.left = "50%";
+			}
+			doc.body.appendChild(dialog);
+			
+			// This has to be done AFTER adding the dialog to the form if you
+			// want it to be centered.
+			dialog.style.marginTop = -(position.getHeight(dialog) / 2) + "px";
+			dialog.style.marginLeft = -(position.getWidth(dialog) / 2) + "px";
+			
+		};
+		
+		createBackground();
+		
+		// Why is this in a zero-length timeout?
+		// Is it working around a browser bug?
+		top.setTimeout(function(){
+		
+			createDialog();
+
+			var defTextLen = defaultInputText.length;
+			if (input.selectionStart !== undefined) {
+				input.selectionStart = 0;
+				input.selectionEnd = defTextLen;
+			}
+			else if (input.createTextRange) {
+				var range = input.createTextRange();
+				range.collapse(false);
+				range.moveStart("character", -defTextLen);
+				range.moveEnd("character", defTextLen);
+				range.select();
+			}
+			
+			input.focus();
+		}, 0);
+	};
+	
+	
+	// UNFINISHED
+	// The assignment in the while loop makes jslint cranky.
+	// I'll change it to a better loop later.
+	position.getTop = function(elem, isInner){
+		var result = elem.offsetTop;
+		if (!isInner) {
+			while (elem = elem.offsetParent) {
+				result += elem.offsetTop;
+			}
+		}
+		return result;
+	};
+	
+	position.getHeight = function (elem) {
+		return elem.offsetHeight || elem.scrollHeight;
+	};
+
+	position.getWidth = function (elem) {
+		return elem.offsetWidth || elem.scrollWidth;
+	};
+
+	position.getPageSize = function(){
+		
+		var scrollWidth, scrollHeight;
+		var innerWidth, innerHeight;
+		
+		// It's not very clear which blocks work with which browsers.
+		if(self.innerHeight && self.scrollMaxY){
+			scrollWidth = doc.body.scrollWidth;
+			scrollHeight = self.innerHeight + self.scrollMaxY;
+		}
+		else if(doc.body.scrollHeight > doc.body.offsetHeight){
+			scrollWidth = doc.body.scrollWidth;
+			scrollHeight = doc.body.scrollHeight;
+		}
+		else{
+			scrollWidth = doc.body.offsetWidth;
+			scrollHeight = doc.body.offsetHeight;
+		}
+		
+		if(self.innerHeight){
+			// Non-IE browser
+			innerWidth = self.innerWidth;
+			innerHeight = self.innerHeight;
+		}
+		else if(doc.documentElement && doc.documentElement.clientHeight){
+			// Some versions of IE (IE 6 w/ a DOCTYPE declaration)
+			innerWidth = doc.documentElement.clientWidth;
+			innerHeight = doc.documentElement.clientHeight;
+		}
+		else if(doc.body){
+			// Other versions of IE
+			innerWidth = doc.body.clientWidth;
+			innerHeight = doc.body.clientHeight;
+		}
+		
+        var maxWidth = Math.max(scrollWidth, innerWidth);
+        var maxHeight = Math.max(scrollHeight, innerHeight);
+        return [maxWidth, maxHeight, innerWidth, innerHeight];
+	};
+	
+	// Watches the input textarea, polling at an interval and runs
+	// a callback function if anything has changed.
+	wmd.inputPoller = function(callback, interval){
+	
+		var pollerObj = this;
+		var inputArea = wmd.panels.input;
+		
+		// Stored start, end and text.  Used to see if there are changes to the input.
+		var lastStart;
+		var lastEnd;
+		var markdown;
+		
+		var killHandle; // Used to cancel monitoring on destruction.
+		// Checks to see if anything has changed in the textarea.
+		// If so, it runs the callback.
+		this.tick = function(){
+		
+			if (!util.isVisible(inputArea)) {
+				return;
+			}
+			
+			// Update the selection start and end, text.
+			if (inputArea.selectionStart || inputArea.selectionStart === 0) {
+				var start = inputArea.selectionStart;
+				var end = inputArea.selectionEnd;
+				if (start != lastStart || end != lastEnd) {
+					lastStart = start;
+					lastEnd = end;
+					
+					if (markdown != inputArea.value) {
+						markdown = inputArea.value;
+						return true;
+					}
+				}
+			}
+			return false;
+		};
+		
+		
+		var doTickCallback = function(){
+		
+			if (!util.isVisible(inputArea)) {
+				return;
+			}
+			
+			// If anything has changed, call the function.
+			if (pollerObj.tick()) {
+				callback();
+			}
+		};
+		
+		// Set how often we poll the textarea for changes.
+		var assignInterval = function(){
+			// previewPollInterval is set at the top of the namespace.
+			killHandle = top.setInterval(doTickCallback, interval);
+		};
+		
+		this.destroy = function(){
+			top.clearInterval(killHandle);
+		};
+		
+		assignInterval();
+	};
+	
+	// Handles pushing and popping TextareaStates for undo/redo commands.
+	// I should rename the stack variables to list.
+	wmd.undoManager = function(callback){
+	
+		var undoObj = this;
+		var undoStack = []; // A stack of undo states
+		var stackPtr = 0; // The index of the current state
+		var mode = "none";
+		var lastState; // The last state
+		var poller;
+		var timer; // The setTimeout handle for cancelling the timer
+		var inputStateObj;
+		
+		// Set the mode for later logic steps.
+		var setMode = function(newMode, noSave){
+		
+			if (mode != newMode) {
+				mode = newMode;
+				if (!noSave) {
+					saveState();
+				}
+			}
+			
+			if (!global.isIE || mode != "moving") {
+				timer = top.setTimeout(refreshState, 1);
+			}
+			else {
+				inputStateObj = null;
+			}
+		};
+		
+		var refreshState = function(){
+			inputStateObj = new wmd.TextareaState();
+			poller.tick();
+			timer = undefined;
+		};
+		
+		this.setCommandMode = function(){
+			mode = "command";
+			saveState();
+			timer = top.setTimeout(refreshState, 0);
+		};
+		
+		this.canUndo = function(){
+			return stackPtr > 1;
+		};
+		
+		this.canRedo = function(){
+			if (undoStack[stackPtr + 1]) {
+				return true;
+			}
+			return false;
+		};
+		
+		// Removes the last state and restores it.
+		this.undo = function(){
+		
+			if (undoObj.canUndo()) {
+				if (lastState) {
+					// What about setting state -1 to null or checking for undefined?
+					lastState.restore();
+					lastState = null;
+				}
+				else {
+					undoStack[stackPtr] = new wmd.TextareaState();
+					undoStack[--stackPtr].restore();
+					
+					if (callback) {
+						callback();
+					}
+				}
+			}
+			
+			mode = "none";
+			wmd.panels.input.focus();
+			refreshState();
+		};
+		
+		// Redo an action.
+		this.redo = function(){
+		
+			if (undoObj.canRedo()) {
+			
+				undoStack[++stackPtr].restore();
+				
+				if (callback) {
+					callback();
+				}
+			}
+			
+			mode = "none";
+			wmd.panels.input.focus();
+			refreshState();
+		};
+		
+		// Push the input area state to the stack.
+		var saveState = function(){
+		
+			var currState = inputStateObj || new wmd.TextareaState();
+			
+			if (!currState) {
+				return false;
+			}
+			if (mode == "moving") {
+				if (!lastState) {
+					lastState = currState;
+				}
+				return;
+			}
+			if (lastState) {
+				if (undoStack[stackPtr - 1].text != lastState.text) {
+					undoStack[stackPtr++] = lastState;
+				}
+				lastState = null;
+			}
+			undoStack[stackPtr++] = currState;
+			undoStack[stackPtr + 1] = null;
+			if (callback) {
+				callback();
+			}
+		};
+		
+		var handleCtrlYZ = function(event){
+		
+			var handled = false;
+			
+			if (event.ctrlKey || event.metaKey) {
+			
+				// IE and Opera do not support charCode.
+				var keyCode = event.charCode || event.keyCode;
+				var keyCodeChar = String.fromCharCode(keyCode);
+				
+				switch (keyCodeChar) {
+				
+					case "y":
+						undoObj.redo();
+						handled = true;
+						break;
+						
+					case "z":
+						if (!event.shiftKey) {
+							undoObj.undo();
+						}
+						else {
+							undoObj.redo();
+						}
+						handled = true;
+						break;
+				}
+			}
+			
+			if (handled) {
+				if (event.preventDefault) {
+					event.preventDefault();
+				}
+				if (top.event) {
+					top.event.returnValue = false;
+				}
+				return;
+			}
+		};
+		
+		// Set the mode depending on what is going on in the input area.
+		var handleModeChange = function(event){
+		
+			if (!event.ctrlKey && !event.metaKey) {
+			
+				var keyCode = event.keyCode;
+				
+				if ((keyCode >= 33 && keyCode <= 40) || (keyCode >= 63232 && keyCode <= 63235)) {
+					// 33 - 40: page up/dn and arrow keys
+					// 63232 - 63235: page up/dn and arrow keys on safari
+					setMode("moving");
+				}
+				else if (keyCode == 8 || keyCode == 46 || keyCode == 127) {
+					// 8: backspace
+					// 46: delete
+					// 127: delete
+					setMode("deleting");
+				}
+				else if (keyCode == 13) {
+					// 13: Enter
+					setMode("newlines");
+				}
+				else if (keyCode == 27) {
+					// 27: escape
+					setMode("escape");
+				}
+				else if ((keyCode < 16 || keyCode > 20) && keyCode != 91) {
+					// 16-20 are shift, etc. 
+					// 91: left window key
+					// I think this might be a little messed up since there are
+					// a lot of nonprinting keys above 20.
+					setMode("typing");
+				}
+			}
+		};
+		
+		var setEventHandlers = function(){
+		
+			util.addEvent(wmd.panels.input, "keypress", function(event){
+				// keyCode 89: y
+				// keyCode 90: z
+				if ((event.ctrlKey || event.metaKey) && (event.keyCode == 89 || event.keyCode == 90)) {
+					event.preventDefault();
+				}
+			});
+			
+			var handlePaste = function(){
+				if (global.isIE || (inputStateObj && inputStateObj.text != wmd.panels.input.value)) {
+					if (timer == undefined) {
+						mode = "paste";
+						saveState();
+						refreshState();
+					}
+				}
+			};
+			
+			// pastePollInterval is specified at the beginning of this namespace.
+			poller = new wmd.inputPoller(handlePaste, pastePollInterval);
+			
+			util.addEvent(wmd.panels.input, "keydown", handleCtrlYZ);
+			util.addEvent(wmd.panels.input, "keydown", handleModeChange);
+			
+			util.addEvent(wmd.panels.input, "mousedown", function(){
+				setMode("moving");
+			});
+			wmd.panels.input.onpaste = handlePaste;
+			wmd.panels.input.ondrop = handlePaste;
+		};
+		
+		var init = function(){
+			setEventHandlers();
+			refreshState();
+			saveState();
+		};
+		
+		this.destroy = function(){
+			if (poller) {
+				poller.destroy();
+			}
+		};
+		
+		init();
+	};
+	
+	// I think my understanding of how the buttons and callbacks are stored in the array is incomplete.
+	wmd.editor = function(previewRefreshCallback){
+	
+		if (!previewRefreshCallback) {
+			previewRefreshCallback = function(){};
+		}
+		
+		var inputBox = wmd.panels.input;
+		
+		var offsetHeight = 0;
+		
+		var editObj = this;
+		
+		var mainDiv;
+		var mainSpan;
+		
+		var div; // This name is pretty ambiguous.  I should rename this.
+		
+		// Used to cancel recurring events from setInterval.
+		var creationHandle;
+		
+		var undoMgr; // The undo manager
+		
+		// Perform the button's action.
+		var doClick = function(button){
+		
+			inputBox.focus();
+			
+			if (button.textOp) {
+				
+				if (undoMgr) {
+					undoMgr.setCommandMode();
+				}
+				
+				var state = new wmd.TextareaState();
+				
+				if (!state) {
+					return;
+				}
+				
+				var chunks = state.getChunks();
+				
+				// Some commands launch a "modal" prompt dialog.  Javascript
+				// can't really make a modal dialog box and the WMD code
+				// will continue to execute while the dialog is displayed.
+				// This prevents the dialog pattern I'm used to and means
+				// I can't do something like this:
+				//
+				// var link = CreateLinkDialog();
+				// makeMarkdownLink(link);
+				// 
+				// Instead of this straightforward method of handling a
+				// dialog I have to pass any code which would execute
+				// after the dialog is dismissed (e.g. link creation)
+				// in a function parameter.
+				//
+				// Yes this is awkward and I think it sucks, but there's
+				// no real workaround.  Only the image and link code
+				// create dialogs and require the function pointers.
+				var fixupInputArea = function(){
+				
+					inputBox.focus();
+					
+					if (chunks) {
+						state.setChunks(chunks);
+					}
+					
+					state.restore();
+					previewRefreshCallback();
+				};
+				
+				var noCleanup = button.textOp(chunks, fixupInputArea);
+				
+				if(!noCleanup) {
+					fixupInputArea();
+				}
+				
+			}
+			
+			if (button.execute) {
+				button.execute(editObj);
+			}
+		};
+			
+		var setUndoRedoButtonStates = function(){
+			if(undoMgr){
+				setupButton(document.getElementById("wmd-undo-button"), undoMgr.canUndo());
+				setupButton(document.getElementById("wmd-redo-button"), undoMgr.canRedo());
+			}
+		};
+		
+		var setupButton = function(button, isEnabled) {
+		
+			var normalYShift = "0px";
+			var disabledYShift = "-20px";
+			var highlightYShift = "-40px";
+			
+			if(isEnabled) {
+				button.style.backgroundPosition = button.XShift + " " + normalYShift;
+				button.onmouseover = function(){
+					this.style.backgroundPosition = this.XShift + " " + highlightYShift;
+				};
+							
+				button.onmouseout = function(){
+					this.style.backgroundPosition = this.XShift + " " + normalYShift;
+				};
+				
+				// IE tries to select the background image "button" text (it's
+				// implemented in a list item) so we have to cache the selection
+				// on mousedown.
+				if(global.isIE) {
+					button.onmousedown =  function() { 
+						wmd.ieRetardedClick = true;
+						wmd.ieCachedRange = document.selection.createRange(); 
+					};
+				}
+				
+				if (!button.isHelp)
+				{
+					button.onclick = function() {
+						if (this.onmouseout) {
+							this.onmouseout();
+						}
+						doClick(this);
+						return false;
+					}
+				}
+			}
+			else {
+				button.style.backgroundPosition = button.XShift + " " + disabledYShift;
+				button.onmouseover = button.onmouseout = button.onclick = function(){};
+			}
+		}
+	
+		var makeSpritedButtonRow = function(){
+		 	
+			var buttonBar = document.getElementById("wmd-button-bar");
+			var normalYShift = "0px";
+			var disabledYShift = "-20px";
+			var highlightYShift = "-40px";
+			
+			var buttonRow = document.createElement("ul");
+			buttonRow.id = "wmd-button-row";
+			buttonRow = buttonBar.appendChild(buttonRow);
+
+			
+			var boldButton = document.createElement("li");
+			boldButton.className = "wmd-button";
+			boldButton.id = "wmd-bold-button";
+			boldButton.title = toolbar_strong_label;
+			boldButton.XShift = "0px";
+			boldButton.textOp = command.doBold;
+			setupButton(boldButton, true);
+			buttonRow.appendChild(boldButton);
+			
+			var italicButton = document.createElement("li");
+			italicButton.className = "wmd-button";
+			italicButton.id = "wmd-italic-button";
+			italicButton.title = toolbar_emphasis_label;
+			italicButton.XShift = "-20px";
+			italicButton.textOp = command.doItalic;
+			setupButton(italicButton, true);
+			buttonRow.appendChild(italicButton);
+
+			var spacer1 = document.createElement("li");
+			spacer1.className = "wmd-spacer";
+			spacer1.id = "wmd-spacer1";
+			buttonRow.appendChild(spacer1); 
+
+			var linkButton = document.createElement("li");
+			linkButton.className = "wmd-button";
+			linkButton.id = "wmd-link-button";
+			linkButton.title = toolbar_hyperlink_label;
+			linkButton.XShift = "-40px";
+			linkButton.textOp = function(chunk, postProcessing){
+				return command.doLinkOrImage(chunk, postProcessing, false);
+			};
+			setupButton(linkButton, true);
+			buttonRow.appendChild(linkButton);
+
+			var quoteButton = document.createElement("li");
+			quoteButton.className = "wmd-button";
+			quoteButton.id = "wmd-quote-button";
+			quoteButton.title = toolbar_blockquote_label;
+			quoteButton.XShift = "-60px";
+			quoteButton.textOp = command.doBlockquote;
+			setupButton(quoteButton, true);
+			buttonRow.appendChild(quoteButton);
+			
+			var codeButton = document.createElement("li");
+			codeButton.className = "wmd-button";
+			codeButton.id = "wmd-code-button";
+			codeButton.title = toolbar_code_label;
+			codeButton.XShift = "-80px";
+			codeButton.textOp = command.doCode;
+			setupButton(codeButton, true);
+			buttonRow.appendChild(codeButton);
+
+			var imageButton = document.createElement("li");
+			imageButton.className = "wmd-button";
+			imageButton.id = "wmd-image-button";
+			imageButton.title = toolbar_image_label;
+			imageButton.XShift = "-100px";
+			imageButton.textOp = function(chunk, postProcessing){
+				return command.doLinkOrImage(chunk, postProcessing, true);
+			};
+			setupButton(imageButton, true);
+			buttonRow.appendChild(imageButton);
+
+			var spacer2 = document.createElement("li");
+			spacer2.className = "wmd-spacer";
+			spacer2.id = "wmd-spacer2";
+			buttonRow.appendChild(spacer2); 
+
+			var olistButton = document.createElement("li");
+			olistButton.className = "wmd-button";
+			olistButton.id = "wmd-olist-button";
+			olistButton.title = toolbar_numbered_label;
+			olistButton.XShift = "-120px";
+			olistButton.textOp = function(chunk, postProcessing){
+				command.doList(chunk, postProcessing, true);
+			};
+			setupButton(olistButton, true);
+			buttonRow.appendChild(olistButton);
+			
+			var ulistButton = document.createElement("li");
+			ulistButton.className = "wmd-button";
+			ulistButton.id = "wmd-ulist-button";
+			ulistButton.title = toolbar_bulleted_label;
+			ulistButton.XShift = "-140px";
+			ulistButton.textOp = function(chunk, postProcessing){
+				command.doList(chunk, postProcessing, false);
+			};
+			setupButton(ulistButton, true);
+			buttonRow.appendChild(ulistButton);
+			
+			var headingButton = document.createElement("li");
+			headingButton.className = "wmd-button";
+			headingButton.id = "wmd-heading-button";
+			headingButton.title = toolbar_heading_label;
+			headingButton.XShift = "-160px";
+			headingButton.textOp = command.doHeading;
+			setupButton(headingButton, true);
+			buttonRow.appendChild(headingButton); 
+			
+			var hrButton = document.createElement("li");
+			hrButton.className = "wmd-button";
+			hrButton.id = "wmd-hr-button";
+			hrButton.title = toolbar_horizontal_label;
+			hrButton.XShift = "-180px";
+			hrButton.textOp = command.doHorizontalRule;
+			setupButton(hrButton, true);
+			buttonRow.appendChild(hrButton); 
+			
+			var spacer3 = document.createElement("li");
+			spacer3.className = "wmd-spacer";
+			spacer3.id = "wmd-spacer3";
+			buttonRow.appendChild(spacer3); 
+			
+			var undoButton = document.createElement("li");
+			undoButton.className = "wmd-button";
+			undoButton.id = "wmd-undo-button";
+			undoButton.title = toolbar_undo_label;
+			undoButton.XShift = "-200px";
+			undoButton.execute = function(manager){
+				manager.undo();
+			};
+			setupButton(undoButton, true);
+			buttonRow.appendChild(undoButton); 
+			
+			var redoButton = document.createElement("li");
+			redoButton.className = "wmd-button";
+			redoButton.id = "wmd-redo-button";
+			redoButton.title = toolbar_redo_label;
+			if (/win/.test(nav.platform.toLowerCase())) {
+				redoButton.title = toolbar_redo_label;
+			}
+			else {
+				// mac and other non-Windows platforms
+				redoButton.title = "重做 - Ctrl+Shift+Z";
+			}
+			redoButton.XShift = "-220px";
+			redoButton.execute = function(manager){
+				manager.redo();
+			};
+			setupButton(redoButton, true);
+			buttonRow.appendChild(redoButton); 
+			/*
+			var helpButton = document.createElement("li");
+			helpButton.className = "wmd-button";
+			helpButton.id = "wmd-help-button";
+			helpButton.XShift = "-240px";
+			helpButton.isHelp = true;
+			
+			var helpAnchor = document.createElement("a");
+			helpAnchor.href = helpLink;
+			helpAnchor.target = helpTarget
+			helpAnchor.title = helpHoverTitle;
+			helpButton.appendChild(helpAnchor);
+			
+			setupButton(helpButton, true);
+			buttonRow.appendChild(helpButton);
+			*/
+			setUndoRedoButtonStates();
+		}
+		
+		var setupEditor = function(){
+		
+			if (/\?noundo/.test(doc.location.href)) {
+				wmd.nativeUndo = true;
+			}
+			
+			if (!wmd.nativeUndo) {
+				undoMgr = new wmd.undoManager(function(){
+					previewRefreshCallback();
+					setUndoRedoButtonStates();
+				});
+			}
+			
+			makeSpritedButtonRow();
+			
+			
+			var keyEvent = "keydown";
+			if (global.isOpera) {
+				keyEvent = "keypress";
+			}
+			
+			util.addEvent(inputBox, keyEvent, function(key){
+				
+				// Check to see if we have a button key and, if so execute the callback.
+				if (key.ctrlKey || key.metaKey) {
+				
+					var keyCode = key.charCode || key.keyCode;
+					var keyCodeStr = String.fromCharCode(keyCode).toLowerCase();
+					
+					// Bugfix for messed up DEL and .
+					if (keyCode === 46) {
+						keyCodeStr = "";
+					}
+					if (keyCode === 190) {
+						keyCodeStr = ".";
+					}
+					
+					switch(keyCodeStr) {
+						case "b":
+							doClick(document.getElementById("wmd-bold-button"));
+							break;
+						case "i":
+							doClick(document.getElementById("wmd-italic-button"));
+							break;
+						case "l":
+							doClick(document.getElementById("wmd-link-button"));
+							break;
+						case ".":
+							doClick(document.getElementById("wmd-quote-button"));
+							break;
+						case "k":
+							doClick(document.getElementById("wmd-code-button"));
+							break;
+						case "g":
+							doClick(document.getElementById("wmd-image-button"));
+							break;
+						case "o":
+							doClick(document.getElementById("wmd-olist-button"));
+							break;
+						case "u":
+							doClick(document.getElementById("wmd-ulist-button"));
+							break;
+						case "h":
+							doClick(document.getElementById("wmd-heading-button"));
+							break;
+						case "r":
+							doClick(document.getElementById("wmd-hr-button"));
+							break;
+						case "y":
+							doClick(document.getElementById("wmd-redo-button"));
+							break;
+						case "z":
+							if(key.shiftKey) {
+								doClick(document.getElementById("wmd-redo-button"));
+							}
+							else {
+								doClick(document.getElementById("wmd-undo-button"));
+							}
+							break;
+						default:
+							return;
+					}
+					
+
+					if (key.preventDefault) {
+						key.preventDefault();
+					}
+					
+					if (top.event) {
+						top.event.returnValue = false;
+					}
+				}
+			});
+			
+			// Auto-indent on shift-enter
+			util.addEvent(inputBox, "keyup", function(key){
+				if (key.shiftKey && !key.ctrlKey && !key.metaKey) {
+					var keyCode = key.charCode || key.keyCode;
+					// Character 13 is Enter
+					if (keyCode === 13) {
+						fakeButton = {};
+						fakeButton.textOp = command.doAutoindent;
+						doClick(fakeButton);
+					}
+				}
+			});
+			
+			if (inputBox.form) {
+				var submitCallback = inputBox.form.onsubmit;
+				inputBox.form.onsubmit = function(){
+					convertToHtml();
+					if (submitCallback) {
+						return submitCallback.apply(this, arguments);
+					}
+				};
+			}
+		};
+		
+		// Convert the contents of the input textarea to HTML in the output/preview panels.
+		var convertToHtml = function(){
+		
+			if (wmd.showdown) {
+				var markdownConverter = new wmd.showdown.converter();
+			}
+			var text = inputBox.value;
+			
+			var callback = function(){
+				inputBox.value = text;
+			};
+			
+			if (!/markdown/.test(wmd.wmd_env.output.toLowerCase())) {
+				if (markdownConverter) {
+					inputBox.value = markdownConverter.makeHtml(text);
+					top.setTimeout(callback, 0);
+				}
+			}
+			return true;
+		};
+		
+		
+		this.undo = function(){
+			if (undoMgr) {
+				undoMgr.undo();
+			}
+		};
+		
+		this.redo = function(){
+			if (undoMgr) {
+				undoMgr.redo();
+			}
+		};
+		
+		// This is pretty useless.  The setupEditor function contents
+		// should just be copied here.
+		var init = function(){
+			setupEditor();
+		};
+		
+		this.destroy = function(){
+			if (undoMgr) {
+				undoMgr.destroy();
+			}
+			if (div.parentNode) {
+				div.parentNode.removeChild(div);
+			}
+			if (inputBox) {
+				inputBox.style.marginTop = "";
+			}
+			top.clearInterval(creationHandle);
+		};
+		
+		init();
+	};
+	
+	// The input textarea state/contents.
+	// This is used to implement undo/redo by the undo manager.
+	wmd.TextareaState = function(){
+	
+		// Aliases
+		var stateObj = this;
+		var inputArea = wmd.panels.input;
+		
+		this.init = function() {
+		
+			if (!util.isVisible(inputArea)) {
+				return;
+			}
+				
+			this.setInputAreaSelectionStartEnd();
+			this.scrollTop = inputArea.scrollTop;
+			if (!this.text && inputArea.selectionStart || inputArea.selectionStart === 0) {
+				this.text = inputArea.value;
+			}
+			
+		}
+		
+		// Sets the selected text in the input box after we've performed an
+		// operation.
+		this.setInputAreaSelection = function(){
+		
+			if (!util.isVisible(inputArea)) {
+				return;
+			}
+			
+			if (inputArea.selectionStart !== undefined && !global.isOpera) {
+			
+				inputArea.focus();
+				inputArea.selectionStart = stateObj.start;
+				inputArea.selectionEnd = stateObj.end;
+				inputArea.scrollTop = stateObj.scrollTop;
+			}
+			else if (doc.selection) {
+				
+				if (doc.activeElement && doc.activeElement !== inputArea) {
+					return;
+				}
+					
+				inputArea.focus();
+				var range = inputArea.createTextRange();
+				range.moveStart("character", -inputArea.value.length);
+				range.moveEnd("character", -inputArea.value.length);
+				range.moveEnd("character", stateObj.end);
+				range.moveStart("character", stateObj.start);
+				range.select();
+			}
+		};
+		
+		this.setInputAreaSelectionStartEnd = function(){
+		
+			if (inputArea.selectionStart || inputArea.selectionStart === 0) {
+			
+				stateObj.start = inputArea.selectionStart;
+				stateObj.end = inputArea.selectionEnd;
+			}
+			else if (doc.selection) {
+				
+				stateObj.text = util.fixEolChars(inputArea.value);
+				
+				// IE loses the selection in the textarea when buttons are
+				// clicked.  On IE we cache the selection and set a flag
+				// which we check for here.
+				var range;
+				if(wmd.ieRetardedClick && wmd.ieCachedRange) {
+					range = wmd.ieCachedRange;
+					wmd.ieRetardedClick = false;
+				}
+				else {
+					range = doc.selection.createRange();
+				}
+
+				var fixedRange = util.fixEolChars(range.text);
+				var marker = "\x07";
+				var markedRange = marker + fixedRange + marker;
+				range.text = markedRange;
+				var inputText = util.fixEolChars(inputArea.value);
+					
+				range.moveStart("character", -markedRange.length);
+				range.text = fixedRange;
+
+				stateObj.start = inputText.indexOf(marker);
+				stateObj.end = inputText.lastIndexOf(marker) - marker.length;
+					
+				var len = stateObj.text.length - util.fixEolChars(inputArea.value).length;
+					
+				if (len) {
+					range.moveStart("character", -fixedRange.length);
+					while (len--) {
+						fixedRange += "\n";
+						stateObj.end += 1;
+					}
+					range.text = fixedRange;
+				}
+					
+				this.setInputAreaSelection();
+			}
+		};
+		
+		// Restore this state into the input area.
+		this.restore = function(){
+		
+			if (stateObj.text != undefined && stateObj.text != inputArea.value) {
+				inputArea.value = stateObj.text;
+			}
+			this.setInputAreaSelection();
+			inputArea.scrollTop = stateObj.scrollTop;
+		};
+		
+		// Gets a collection of HTML chunks from the inptut textarea.
+		this.getChunks = function(){
+		
+			var chunk = new wmd.Chunks();
+			
+			chunk.before = util.fixEolChars(stateObj.text.substring(0, stateObj.start));
+			chunk.startTag = "";
+			chunk.selection = util.fixEolChars(stateObj.text.substring(stateObj.start, stateObj.end));
+			chunk.endTag = "";
+			chunk.after = util.fixEolChars(stateObj.text.substring(stateObj.end));
+			chunk.scrollTop = stateObj.scrollTop;
+			
+			return chunk;
+		};
+		
+		// Sets the TextareaState properties given a chunk of markdown.
+		this.setChunks = function(chunk){
+		
+			chunk.before = chunk.before + chunk.startTag;
+			chunk.after = chunk.endTag + chunk.after;
+			
+			if (global.isOpera) {
+				chunk.before = chunk.before.replace(/\n/g, "\r\n");
+				chunk.selection = chunk.selection.replace(/\n/g, "\r\n");
+				chunk.after = chunk.after.replace(/\n/g, "\r\n");
+			}
+			
+			this.start = chunk.before.length;
+			this.end = chunk.before.length + chunk.selection.length;
+			this.text = chunk.before + chunk.selection + chunk.after;
+			this.scrollTop = chunk.scrollTop;
+		};
+
+		this.init();
+	};
+	
+	// before: contains all the text in the input box BEFORE the selection.
+	// after: contains all the text in the input box AFTER the selection.
+	wmd.Chunks = function(){
+	};
+	
+	// startRegex: a regular expression to find the start tag
+	// endRegex: a regular expresssion to find the end tag
+	wmd.Chunks.prototype.findTags = function(startRegex, endRegex){
+	
+		var chunkObj = this;
+		var regex;
+		
+		if (startRegex) {
+			
+			regex = util.extendRegExp(startRegex, "", "$");
+			
+			this.before = this.before.replace(regex, 
+				function(match){
+					chunkObj.startTag = chunkObj.startTag + match;
+					return "";
+				});
+			
+			regex = util.extendRegExp(startRegex, "^", "");
+			
+			this.selection = this.selection.replace(regex, 
+				function(match){
+					chunkObj.startTag = chunkObj.startTag + match;
+					return "";
+				});
+		}
+		
+		if (endRegex) {
+			
+			regex = util.extendRegExp(endRegex, "", "$");
+			
+			this.selection = this.selection.replace(regex,
+				function(match){
+					chunkObj.endTag = match + chunkObj.endTag;
+					return "";
+				});
+
+			regex = util.extendRegExp(endRegex, "^", "");
+			
+			this.after = this.after.replace(regex,
+				function(match){
+					chunkObj.endTag = match + chunkObj.endTag;
+					return "";
+				});
+		}
+	};
+	
+	// If remove is false, the whitespace is transferred
+	// to the before/after regions.
+	//
+	// If remove is true, the whitespace disappears.
+	wmd.Chunks.prototype.trimWhitespace = function(remove){
+	
+		this.selection = this.selection.replace(/^(\s*)/, "");
+		
+		if (!remove) {
+			this.before += re.$1;
+		}
+		
+		this.selection = this.selection.replace(/(\s*)$/, "");
+		
+		if (!remove) {
+			this.after = re.$1 + this.after;
+		}
+	};
+	
+	
+	wmd.Chunks.prototype.skipLines = function(nLinesBefore, nLinesAfter, findExtraNewlines){
+	
+		if (nLinesBefore === undefined) {
+			nLinesBefore = 1;
+		}
+		
+		if (nLinesAfter === undefined) {
+			nLinesAfter = 1;
+		}
+		
+		nLinesBefore++;
+		nLinesAfter++;
+		
+		var regexText;
+		var replacementText;
+		
+		this.selection = this.selection.replace(/(^\n*)/, "");
+		this.startTag = this.startTag + re.$1;
+		this.selection = this.selection.replace(/(\n*$)/, "");
+		this.endTag = this.endTag + re.$1;
+		this.startTag = this.startTag.replace(/(^\n*)/, "");
+		this.before = this.before + re.$1;
+		this.endTag = this.endTag.replace(/(\n*$)/, "");
+		this.after = this.after + re.$1;
+		
+		if (this.before) {
+		
+			regexText = replacementText = "";
+			
+			while (nLinesBefore--) {
+				regexText += "\\n?";
+				replacementText += "\n";
+			}
+			
+			if (findExtraNewlines) {
+				regexText = "\\n*";
+			}
+			this.before = this.before.replace(new re(regexText + "$", ""), replacementText);
+		}
+		
+		if (this.after) {
+		
+			regexText = replacementText = "";
+			
+			while (nLinesAfter--) {
+				regexText += "\\n?";
+				replacementText += "\n";
+			}
+			if (findExtraNewlines) {
+				regexText = "\\n*";
+			}
+			
+			this.after = this.after.replace(new re(regexText, ""), replacementText);
+		}
+	};
+	
+	// The markdown symbols - 4 spaces = code, > = blockquote, etc.
+	command.prefixes = "(?:\\s{4,}|\\s*>|\\s*-\\s+|\\s*\\d+\\.|=|\\+|-|_|\\*|#|\\s*\\[[^\n]]+\\]:)";
+	
+	// Remove markdown symbols from the chunk selection.
+	command.unwrap = function(chunk){
+		var txt = new re("([^\\n])\\n(?!(\\n|" + command.prefixes + "))", "g");
+		chunk.selection = chunk.selection.replace(txt, "$1 $2");
+	};
+	
+	command.wrap = function(chunk, len){
+		command.unwrap(chunk);
+		var regex = new re("(.{1," + len + "})( +|$\\n?)", "gm");
+		
+		chunk.selection = chunk.selection.replace(regex, function(line, marked){
+			if (new re("^" + command.prefixes, "").test(line)) {
+				return line;
+			}
+			return marked + "\n";
+		});
+		
+		chunk.selection = chunk.selection.replace(/\s+$/, "");
+	};
+	
+	command.doBold = function(chunk, postProcessing){
+		return command.doBorI(chunk, postProcessing, 2, "strong text");
+	};
+	
+	command.doItalic = function(chunk, postProcessing){
+		return command.doBorI(chunk, postProcessing, 1, "emphasized text");
+	};
+	
+	// chunk: The selected region that will be enclosed with */**
+	// nStars: 1 for italics, 2 for bold
+	// insertText: If you just click the button without highlighting text, this gets inserted
+	command.doBorI = function(chunk, postProcessing, nStars, insertText){
+	
+		// Get rid of whitespace and fixup newlines.
+		chunk.trimWhitespace();
+		chunk.selection = chunk.selection.replace(/\n{2,}/g, "\n");
+		
+		// Look for stars before and after.  Is the chunk already marked up?
+		chunk.before.search(/(\**$)/);
+		var starsBefore = re.$1;
+		
+		chunk.after.search(/(^\**)/);
+		var starsAfter = re.$1;
+		
+		var prevStars = Math.min(starsBefore.length, starsAfter.length);
+		
+		// Remove stars if we have to since the button acts as a toggle.
+		if ((prevStars >= nStars) && (prevStars != 2 || nStars != 1)) {
+			chunk.before = chunk.before.replace(re("[*]{" + nStars + "}$", ""), "");
+			chunk.after = chunk.after.replace(re("^[*]{" + nStars + "}", ""), "");
+		}
+		else if (!chunk.selection && starsAfter) {
+			// It's not really clear why this code is necessary.  It just moves
+			// some arbitrary stuff around.
+			chunk.after = chunk.after.replace(/^([*_]*)/, "");
+			chunk.before = chunk.before.replace(/(\s?)$/, "");
+			var whitespace = re.$1;
+			chunk.before = chunk.before + starsAfter + whitespace;
+		}
+		else {
+		
+			// In most cases, if you don't have any selected text and click the button
+			// you'll get a selected, marked up region with the default text inserted.
+			if (!chunk.selection && !starsAfter) {
+				chunk.selection = insertText;
+			}
+			
+			// Add the true markup.
+			var markup = nStars <= 1 ? "*" : "**"; // shouldn't the test be = ?
+			chunk.before = chunk.before + markup;
+			chunk.after = markup + chunk.after;
+		}
+		
+		return;
+	};
+	
+	command.stripLinkDefs = function(text, defsToAdd){
+	
+		text = text.replace(/^[ ]{0,3}\[(\d+)\]:[ \t]*\n?[ \t]*<?(\S+?)>?[ \t]*\n?[ \t]*(?:(\n*)["(](.+?)[")][ \t]*)?(?:\n+|$)/gm, 
+			function(totalMatch, id, link, newlines, title){	
+				defsToAdd[id] = totalMatch.replace(/\s*$/, "");
+				if (newlines) {
+					// Strip the title and return that separately.
+					defsToAdd[id] = totalMatch.replace(/["(](.+?)[")]$/, "");
+					return newlines + title;
+				}
+				return "";
+			});
+		
+		return text;
+	};
+	
+	command.addLinkDef = function(chunk, linkDef){
+	
+		var refNumber = 0; // The current reference number
+		var defsToAdd = {}; //
+		// Start with a clean slate by removing all previous link definitions.
+		chunk.before = command.stripLinkDefs(chunk.before, defsToAdd);
+		chunk.selection = command.stripLinkDefs(chunk.selection, defsToAdd);
+		chunk.after = command.stripLinkDefs(chunk.after, defsToAdd);
+		
+		var defs = "";
+		var regex = /(\[(?:\[[^\]]*\]|[^\[\]])*\][ ]?(?:\n[ ]*)?\[)(\d+)(\])/g;
+		
+		var addDefNumber = function(def){
+			refNumber++;
+			def = def.replace(/^[ ]{0,3}\[(\d+)\]:/, "  [" + refNumber + "]:");
+			defs += "\n" + def;
+		};
+		
+		var getLink = function(wholeMatch, link, id, end){
+		
+			if (defsToAdd[id]) {
+				addDefNumber(defsToAdd[id]);
+				return link + refNumber + end;
+				
+			}
+			return wholeMatch;
+		};
+		
+		chunk.before = chunk.before.replace(regex, getLink);
+		
+		if (linkDef) {
+			addDefNumber(linkDef);
+		}
+		else {
+			chunk.selection = chunk.selection.replace(regex, getLink);
+		}
+		
+		var refOut = refNumber;
+		
+		chunk.after = chunk.after.replace(regex, getLink);
+		
+		if (chunk.after) {
+			chunk.after = chunk.after.replace(/\n*$/, "");
+		}
+		if (!chunk.after) {
+			chunk.selection = chunk.selection.replace(/\n*$/, "");
+		}
+		
+		chunk.after += "\n\n" + defs;
+		
+		return refOut;
+	};
+	
+	command.doLinkOrImage = function(chunk, postProcessing, isImage){
+	
+		chunk.trimWhitespace();
+		chunk.findTags(/\s*!?\[/, /\][ ]?(?:\n[ ]*)?(\[.*?\])?/);
+		
+		if (chunk.endTag.length > 1) {
+		
+			chunk.startTag = chunk.startTag.replace(/!?\[/, "");
+			chunk.endTag = "";
+			command.addLinkDef(chunk, null);
+			
+		}
+		else {
+		
+			if (/\n\n/.test(chunk.selection)) {
+				command.addLinkDef(chunk, null);
+				return;
+			}
+			
+			// The function to be executed when you enter a link and press OK or Cancel.
+			// Marks up the link and adds the ref.
+			var makeLinkMarkdown = function(link){
+			
+				if (link !== null) {
+				
+					chunk.startTag = chunk.endTag = "";
+					var linkDef = " [999]: " + link;
+					
+					var num = command.addLinkDef(chunk, linkDef);
+					chunk.startTag = isImage ? "![" : "[";
+					chunk.endTag = "][" + num + "]";
+					
+					if (!chunk.selection) {
+						if (isImage) {
+							chunk.selection = "alt text";
+						}
+						else {
+							chunk.selection = "link text";
+						}
+					}
+				}
+				postProcessing();
+			};
+			
+			if (isImage) {
+                // add forth param to identify image window
+				util.prompt(imageDialogText, imageDefaultText, makeLinkMarkdown, 1);
+			}
+			else {
+				util.prompt(linkDialogText, linkDefaultText, makeLinkMarkdown);
+			}
+			return true;
+		}
+	};
+	
+	util.makeAPI = function(){
+		wmd.wmd = {};
+		wmd.wmd.editor = wmd.editor;
+		wmd.wmd.previewManager = wmd.previewManager;
+	};
+	
+	util.startEditor = function(){
+	
+		if (wmd.wmd_env.autostart === false) {
+			util.makeAPI();
+			return;
+		}
+
+		var edit;		// The editor (buttons + input + outputs) - the main object.
+		var previewMgr;	// The preview manager.
+		
+		// Fired after the page has fully loaded.
+		var loadListener = function(){
+		
+			wmd.panels = new wmd.PanelCollection();
+			
+			previewMgr = new wmd.previewManager();
+			var previewRefreshCallback = previewMgr.refresh;
+						
+			edit = new wmd.editor(previewRefreshCallback);
+			
+			previewMgr.refresh(true);
+			
+		};
+		
+		util.addEvent(top, "load", loadListener);
+	};
+	
+	wmd.previewManager = function(){
+		
+		var managerObj = this;
+		var converter;
+		var poller;
+		var timeout;
+		var elapsedTime;
+		var oldInputText;
+		var htmlOut;
+		var maxDelay = 3000;
+		var startType = "delayed"; // The other legal value is "manual"
+		
+		// Adds event listeners to elements and creates the input poller.
+		var setupEvents = function(inputElem, listener){
+		
+			util.addEvent(inputElem, "input", listener);
+			inputElem.onpaste = listener;
+			inputElem.ondrop = listener;
+			
+			util.addEvent(inputElem, "keypress", listener);
+			util.addEvent(inputElem, "keydown", listener);
+			// previewPollInterval is set at the top of this file.
+			poller = new wmd.inputPoller(listener, previewPollInterval);
+		};
+		
+		var getDocScrollTop = function(){
+		
+			var result = 0;
+			
+			if (top.innerHeight) {
+				result = top.pageYOffset;
+			}
+			else 
+				if (doc.documentElement && doc.documentElement.scrollTop) {
+					result = doc.documentElement.scrollTop;
+				}
+				else 
+					if (doc.body) {
+						result = doc.body.scrollTop;
+					}
+			
+			return result;
+		};
+		
+		var makePreviewHtml = function(){
+		
+			// If there are no registered preview and output panels
+			// there is nothing to do.
+			if (!wmd.panels.preview && !wmd.panels.output) {
+				return;
+			}
+			
+			var text = wmd.panels.input.value;
+			if (text && text == oldInputText) {
+				return; // Input text hasn't changed.
+			}
+			else {
+				oldInputText = text;
+			}
+			
+			var prevTime = new Date().getTime();
+			
+			if (!converter && wmd.showdown) {
+				converter = new wmd.showdown.converter();
+			}
+			
+			if (converter) {
+				text = converter.makeHtml(text);
+			}
+			
+			// Calculate the processing time of the HTML creation.
+			// It's used as the delay time in the event listener.
+			var currTime = new Date().getTime();
+			elapsedTime = currTime - prevTime;
+			
+			pushPreviewHtml(text);
+			htmlOut = text;
+		};
+		
+		// setTimeout is already used.  Used as an event listener.
+		var applyTimeout = function(){
+		
+			if (timeout) {
+				top.clearTimeout(timeout);
+				timeout = undefined;
+			}
+			
+			if (startType !== "manual") {
+			
+				var delay = 0;
+				
+				if (startType === "delayed") {
+					delay = elapsedTime;
+				}
+				
+				if (delay > maxDelay) {
+					delay = maxDelay;
+				}
+				timeout = top.setTimeout(makePreviewHtml, delay);
+			}
+		};
+		
+		var getScaleFactor = function(panel){
+			if (panel.scrollHeight <= panel.clientHeight) {
+				return 1;
+			}
+			return panel.scrollTop / (panel.scrollHeight - panel.clientHeight);
+		};
+		
+		var setPanelScrollTops = function(){
+		
+			if (wmd.panels.preview) {
+				wmd.panels.preview.scrollTop = (wmd.panels.preview.scrollHeight - wmd.panels.preview.clientHeight) * getScaleFactor(wmd.panels.preview);
+				;
+			}
+			
+			if (wmd.panels.output) {
+				wmd.panels.output.scrollTop = (wmd.panels.output.scrollHeight - wmd.panels.output.clientHeight) * getScaleFactor(wmd.panels.output);
+				;
+			}
+		};
+		
+		this.refresh = function(requiresRefresh){
+		
+			if (requiresRefresh) {
+				oldInputText = "";
+				makePreviewHtml();
+			}
+			else {
+				applyTimeout();
+			}
+		};
+		
+		this.processingTime = function(){
+			return elapsedTime;
+		};
+		
+		// The output HTML
+		this.output = function(){
+			return htmlOut;
+		};
+		
+		// The mode can be "manual" or "delayed"
+		this.setUpdateMode = function(mode){
+			startType = mode;
+			managerObj.refresh();
+		};
+		
+		var isFirstTimeFilled = true;
+		
+		var pushPreviewHtml = function(text){
+		
+			var emptyTop = position.getTop(wmd.panels.input) - getDocScrollTop();
+			
+			// Send the encoded HTML to the output textarea/div.
+			if (wmd.panels.output) {
+				// The value property is only defined if the output is a textarea.
+				if (wmd.panels.output.value !== undefined) {
+					wmd.panels.output.value = text;
+					wmd.panels.output.readOnly = true;
+				}
+				// Otherwise we are just replacing the text in a div.
+				// Send the HTML wrapped in <pre><code>
+				else {
+					var newText = text.replace(/&/g, "&amp;");
+					newText = newText.replace(/</g, "&lt;");
+					wmd.panels.output.innerHTML = "<pre><code>" + newText + "</code></pre>";
+				}
+			}
+			
+			if (wmd.panels.preview) {
+				wmd.panels.preview.innerHTML = text;
+			}
+			
+			setPanelScrollTops();
+			
+			if (isFirstTimeFilled) {
+				isFirstTimeFilled = false;
+				return;
+			}
+			
+			var fullTop = position.getTop(wmd.panels.input) - getDocScrollTop();
+			
+			if (global.isIE) {
+				top.setTimeout(function(){
+					top.scrollBy(0, fullTop - emptyTop);
+				}, 0);
+			}
+			else {
+				top.scrollBy(0, fullTop - emptyTop);
+			}
+		};
+		
+		var init = function(){
+		
+			setupEvents(wmd.panels.input, applyTimeout);
+			makePreviewHtml();
+			
+			if (wmd.panels.preview) {
+				wmd.panels.preview.scrollTop = 0;
+			}
+			if (wmd.panels.output) {
+				wmd.panels.output.scrollTop = 0;
+			}
+		};
+		
+		this.destroy = function(){
+			if (poller) {
+				poller.destroy();
+			}
+		};
+		
+		init();
+	};
+
+	// When making a list, hitting shift-enter will put your cursor on the next line
+	// at the current indent level.
+	command.doAutoindent = function(chunk, postProcessing){
+		
+		chunk.before = chunk.before.replace(/(\n|^)[ ]{0,3}([*+-]|\d+[.])[ \t]*\n$/, "\n\n");
+		chunk.before = chunk.before.replace(/(\n|^)[ ]{0,3}>[ \t]*\n$/, "\n\n");
+		chunk.before = chunk.before.replace(/(\n|^)[ \t]+\n$/, "\n\n");
+		
+		if(/(\n|^)[ ]{0,3}([*+-]|\d+[.])[ \t]+.*\n$/.test(chunk.before)){
+			if(command.doList){
+				command.doList(chunk);
+			}
+		}
+		if(/(\n|^)[ ]{0,3}>[ \t]+.*\n$/.test(chunk.before)){
+			if(command.doBlockquote){
+				command.doBlockquote(chunk);
+			}
+		}
+		if(/(\n|^)(\t|[ ]{4,}).*\n$/.test(chunk.before)){
+			if(command.doCode){
+				command.doCode(chunk);
+			}
+		}
+	};
+	
+	command.doBlockquote = function(chunk, postProcessing){
+		
+		chunk.selection = chunk.selection.replace(/^(\n*)([^\r]+?)(\n*)$/,
+			function(totalMatch, newlinesBefore, text, newlinesAfter){
+				chunk.before += newlinesBefore;
+				chunk.after = newlinesAfter + chunk.after;
+				return text;
+			});
+			
+		chunk.before = chunk.before.replace(/(>[ \t]*)$/,
+			function(totalMatch, blankLine){
+				chunk.selection = blankLine + chunk.selection;
+				return "";
+			});
+			
+		chunk.selection = chunk.selection.replace(/^(\s|>)+$/ ,"");
+		chunk.selection = chunk.selection || "Blockquote";
+		
+		if(chunk.before){
+			chunk.before = chunk.before.replace(/\n?$/,"\n");
+		}
+		if(chunk.after){
+			chunk.after = chunk.after.replace(/^\n?/,"\n");
+		}
+		
+		chunk.before = chunk.before.replace(/(((\n|^)(\n[ \t]*)*>(.+\n)*.*)+(\n[ \t]*)*$)/,
+			function(totalMatch){
+				chunk.startTag = totalMatch;
+				return "";
+			});
+			
+		chunk.after = chunk.after.replace(/^(((\n|^)(\n[ \t]*)*>(.+\n)*.*)+(\n[ \t]*)*)/,
+			function(totalMatch){
+				chunk.endTag = totalMatch;
+				return "";
+			});
+		
+		var replaceBlanksInTags = function(useBracket){
+			
+			var replacement = useBracket ? "> " : "";
+			
+			if(chunk.startTag){
+				chunk.startTag = chunk.startTag.replace(/\n((>|\s)*)\n$/,
+					function(totalMatch, markdown){
+						return "\n" + markdown.replace(/^[ ]{0,3}>?[ \t]*$/gm, replacement) + "\n";
+					});
+			}
+			if(chunk.endTag){
+				chunk.endTag = chunk.endTag.replace(/^\n((>|\s)*)\n/,
+					function(totalMatch, markdown){
+						return "\n" + markdown.replace(/^[ ]{0,3}>?[ \t]*$/gm, replacement) + "\n";
+					});
+			}
+		};
+		
+		if(/^(?![ ]{0,3}>)/m.test(chunk.selection)){
+			command.wrap(chunk, wmd.wmd_env.lineLength - 2);
+			chunk.selection = chunk.selection.replace(/^/gm, "> ");
+			replaceBlanksInTags(true);
+			chunk.skipLines();
+		}
+		else{
+			chunk.selection = chunk.selection.replace(/^[ ]{0,3}> ?/gm, "");
+			command.unwrap(chunk);
+			replaceBlanksInTags(false);
+			
+			if(!/^(\n|^)[ ]{0,3}>/.test(chunk.selection) && chunk.startTag){
+				chunk.startTag = chunk.startTag.replace(/\n{0,2}$/, "\n\n");
+			}
+			
+			if(!/(\n|^)[ ]{0,3}>.*$/.test(chunk.selection) && chunk.endTag){
+				chunk.endTag=chunk.endTag.replace(/^\n{0,2}/, "\n\n");
+			}
+		}
+		
+		if(!/\n/.test(chunk.selection)){
+			chunk.selection = chunk.selection.replace(/^(> *)/,
+			function(wholeMatch, blanks){
+				chunk.startTag += blanks;
+				return "";
+			});
+		}
+	};
+
+	command.doCode = function(chunk, postProcessing){
+		
+		var hasTextBefore = /\S[ ]*$/.test(chunk.before);
+		var hasTextAfter = /^[ ]*\S/.test(chunk.after);
+		
+		// Use 'four space' markdown if the selection is on its own
+		// line or is multiline.
+		if((!hasTextAfter && !hasTextBefore) || /\n/.test(chunk.selection)){
+			
+			chunk.before = chunk.before.replace(/[ ]{4}$/,
+				function(totalMatch){
+					chunk.selection = totalMatch + chunk.selection;
+					return "";
+				});
+				
+			var nLinesBack = 1;
+			var nLinesForward = 1;
+			
+			if(/\n(\t|[ ]{4,}).*\n$/.test(chunk.before)){
+				nLinesBack = 0;
+			}
+			if(/^\n(\t|[ ]{4,})/.test(chunk.after)){
+				nLinesForward = 0;
+			}
+			
+			chunk.skipLines(nLinesBack, nLinesForward);
+			
+			if(!chunk.selection){
+				chunk.startTag = "    ";
+				chunk.selection = "enter code here";
+			}
+			else {
+				if(/^[ ]{0,3}\S/m.test(chunk.selection)){
+					chunk.selection = chunk.selection.replace(/^/gm, "    ");
+				}
+				else{
+					chunk.selection = chunk.selection.replace(/^[ ]{4}/gm, "");
+				}
+			}
+		}
+		else{
+			// Use backticks (`) to delimit the code block.
+			
+			chunk.trimWhitespace();
+			chunk.findTags(/`/, /`/);
+			
+			if(!chunk.startTag && !chunk.endTag){
+				chunk.startTag = chunk.endTag="`";
+				if(!chunk.selection){
+					chunk.selection = "enter code here";
+				}
+			}
+			else if(chunk.endTag && !chunk.startTag){
+				chunk.before += chunk.endTag;
+				chunk.endTag = "";
+			}
+			else{
+				chunk.startTag = chunk.endTag="";
+			}
+		}
+	};
+	
+	command.doList = function(chunk, postProcessing, isNumberedList){
+				
+		// These are identical except at the very beginning and end.
+		// Should probably use the regex extension function to make this clearer.
+		var previousItemsRegex = /(\n|^)(([ ]{0,3}([*+-]|\d+[.])[ \t]+.*)(\n.+|\n{2,}([*+-].*|\d+[.])[ \t]+.*|\n{2,}[ \t]+\S.*)*)\n*$/;
+		var nextItemsRegex = /^\n*(([ ]{0,3}([*+-]|\d+[.])[ \t]+.*)(\n.+|\n{2,}([*+-].*|\d+[.])[ \t]+.*|\n{2,}[ \t]+\S.*)*)\n*/;
+		
+		// The default bullet is a dash but others are possible.
+		// This has nothing to do with the particular HTML bullet,
+		// it's just a markdown bullet.
+		var bullet = "-";
+		
+		// The number in a numbered list.
+		var num = 1;
+		
+		// Get the item prefix - e.g. " 1. " for a numbered list, " - " for a bulleted list.
+		var getItemPrefix = function(){
+			var prefix;
+			if(isNumberedList){
+				prefix = " " + num + ". ";
+				num++;
+			}
+			else{
+				prefix = " " + bullet + " ";
+			}
+			return prefix;
+		};
+		
+		// Fixes the prefixes of the other list items.
+		var getPrefixedItem = function(itemText){
+		
+			// The numbering flag is unset when called by autoindent.
+			if(isNumberedList === undefined){
+				isNumberedList = /^\s*\d/.test(itemText);
+			}
+			
+			// Renumber/bullet the list element.
+			itemText = itemText.replace(/^[ ]{0,3}([*+-]|\d+[.])\s/gm,
+				function( _ ){
+					return getItemPrefix();
+				});
+				
+			return itemText;
+		};
+		
+		chunk.findTags(/(\n|^)*[ ]{0,3}([*+-]|\d+[.])\s+/, null);
+		
+		if(chunk.before && !/\n$/.test(chunk.before) && !/^\n/.test(chunk.startTag)){
+			chunk.before += chunk.startTag;
+			chunk.startTag = "";
+		}
+		
+		if(chunk.startTag){
+			
+			var hasDigits = /\d+[.]/.test(chunk.startTag);
+			chunk.startTag = "";
+			chunk.selection = chunk.selection.replace(/\n[ ]{4}/g, "\n");
+			command.unwrap(chunk);
+			chunk.skipLines();
+			
+			if(hasDigits){
+				// Have to renumber the bullet points if this is a numbered list.
+				chunk.after = chunk.after.replace(nextItemsRegex, getPrefixedItem);
+			}
+			if(isNumberedList == hasDigits){
+				return;
+			}
+		}
+		
+		var nLinesUp = 1;
+		
+		chunk.before = chunk.before.replace(previousItemsRegex,
+			function(itemText){
+				if(/^\s*([*+-])/.test(itemText)){
+					bullet = re.$1;
+				}
+				nLinesUp = /[^\n]\n\n[^\n]/.test(itemText) ? 1 : 0;
+				return getPrefixedItem(itemText);
+			});
+			
+		if(!chunk.selection){
+			chunk.selection = "List item";
+		}
+		
+		var prefix = getItemPrefix();
+		
+		var nLinesDown = 1;
+		
+		chunk.after = chunk.after.replace(nextItemsRegex,
+			function(itemText){
+				nLinesDown = /[^\n]\n\n[^\n]/.test(itemText) ? 1 : 0;
+				return getPrefixedItem(itemText);
+			});
+			
+		chunk.trimWhitespace(true);
+		chunk.skipLines(nLinesUp, nLinesDown, true);
+		chunk.startTag = prefix;
+		var spaces = prefix.replace(/./g, " ");
+		command.wrap(chunk, wmd.wmd_env.lineLength - spaces.length);
+		chunk.selection = chunk.selection.replace(/\n/g, "\n" + spaces);
+		
+	};
+	
+	command.doHeading = function(chunk, postProcessing){
+		
+		// Remove leading/trailing whitespace and reduce internal spaces to single spaces.
+		chunk.selection = chunk.selection.replace(/\s+/g, " ");
+		chunk.selection = chunk.selection.replace(/(^\s+|\s+$)/g, "");
+		
+		// If we clicked the button with no selected text, we just
+		// make a level 2 hash header around some default text.
+		if(!chunk.selection){
+			chunk.startTag = "## ";
+			chunk.selection = "Heading";
+			chunk.endTag = " ##";
+			return;
+		}
+		
+		var headerLevel = 0;		// The existing header level of the selected text.
+		
+		// Remove any existing hash heading markdown and save the header level.
+		chunk.findTags(/#+[ ]*/, /[ ]*#+/);
+		if(/#+/.test(chunk.startTag)){
+			headerLevel = re.lastMatch.length;
+		}
+		chunk.startTag = chunk.endTag = "";
+		
+		// Try to get the current header level by looking for - and = in the line
+		// below the selection.
+		chunk.findTags(null, /\s?(-+|=+)/);
+		if(/=+/.test(chunk.endTag)){
+			headerLevel = 1;
+		}
+		if(/-+/.test(chunk.endTag)){
+			headerLevel = 2;
+		}
+		
+		// Skip to the next line so we can create the header markdown.
+		chunk.startTag = chunk.endTag = "";
+		chunk.skipLines(1, 1);
+
+		// We make a level 2 header if there is no current header.
+		// If there is a header level, we substract one from the header level.
+		// If it's already a level 1 header, it's removed.
+		var headerLevelToCreate = headerLevel == 0 ? 2 : headerLevel - 1;
+		
+		if(headerLevelToCreate > 0){
+			
+			// The button only creates level 1 and 2 underline headers.
+			// Why not have it iterate over hash header levels?  Wouldn't that be easier and cleaner?
+			var headerChar = headerLevelToCreate >= 2 ? "-" : "=";
+			var len = chunk.selection.length;
+			if(len > wmd.wmd_env.lineLength){
+				len = wmd.wmd_env.lineLength;
+			}
+			chunk.endTag = "\n";
+			while(len--){
+				chunk.endTag += headerChar;
+			}
+		}
+	};	
+	
+	command.doHorizontalRule = function(chunk, postProcessing){
+		chunk.startTag = "----------\n";
+		chunk.selection = "";
+		chunk.skipLines(2, 1, true);
+	}
+};
+
+
+Attacklab.wmd_env = {};
+Attacklab.account_options = {};
+Attacklab.wmd_defaults = {version:1, output:"Markdown", lineLength:40, delayLoad:false};
+
+if(!Attacklab.wmd)
+{
+	Attacklab.wmd = function()
+	{
+		Attacklab.loadEnv = function()
+		{
+			var mergeEnv = function(env)
+			{
+				if(!env)
+				{
+					return;
+				}
+			
+				for(var key in env)
+				{
+					Attacklab.wmd_env[key] = env[key];
+				}
+			};
+			
+			mergeEnv(Attacklab.wmd_defaults);
+			mergeEnv(Attacklab.account_options);
+			mergeEnv(top["wmd_options"]);
+			Attacklab.full = true;
+			
+			var defaultButtons = "bold italic link blockquote code image ol ul heading hr";
+			Attacklab.wmd_env.buttons = Attacklab.wmd_env.buttons || defaultButtons;
+		};
+		Attacklab.loadEnv();
+
+	};
+	
+	Attacklab.wmd();
+	Attacklab.wmdBase();
+	Attacklab.Util.startEditor();
+};
+