htdocs/static/js/navigation.js


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var liSelected;
$(window).keydown(function(e) {
    var li = $('#hostlist .list .thumbnail');
    if (e.which === 40) {
        if (liSelected) {
            liSelected.removeClass('selected');
            next = liSelected.next();
            if (next.length > 0) {
                liSelected = next.addClass('selected');
            } else {
                liSelected = li.eq(0).addClass('selected');
            }
        } else {
            liSelected = li.eq(0).addClass('selected');
        }

	$('body').scrollTo(liSelected, {offset: -20});
	return false;
    }

    if (e.which === 38) {
        if (liSelected) {
            liSelected.removeClass('selected');
            next = liSelected.prev();
            if (next.length > 0) {
                liSelected = next.addClass('selected');
            } else {
                liSelected = li.last().addClass('selected');
            }
        } else {
            liSelected = li.last().addClass('selected');
        }

	$('body').scrollTo(liSelected, {offset: -20});
	return false;
    }

    if (e.which === 13) {
        if (liSelected) {
            window.location = liSelected.find('a').attr('href');
            return false;
        }
    }
});