var tree={init:function()
{var oRoot=support.getElementsByClassName(document,"tree");oRoot=(oRoot.length>-1)?oRoot[0]:null;if(oRoot)
{var links=oRoot.getElementsByTagName("A");support.addStyleRule("ul.tree ul.closed","display:none");for(var i=0;i<links.length;i++)
{var link=links[i];var sibling=support.nextSibling(link);if((sibling)&&(sibling.tagName=="UL"))
{var bClosed=(sibling.className.indexOf("closed")>-1);events.add(link,"click",tree.click);link.className=(bClosed)?"expand":"collapse";}}}},isRoot:function(el)
{return((el)&&(el.parentNode)&&(el.parentNode.parentNode)&&(el.parentNode.parentNode.className=="tree"))?true:false;},click:function(e)
{var el=e.target;var sibling=support.nextSibling(el);var sLocation=new String(document.location.href);if(sibling)
{var bClosed=(sibling.className.indexOf("closed")>-1);sibling.className=(bClosed)?"open":"closed";el.title=(bClosed)?"click to expand":"click to collapse"
el.className=(bClosed)?"collapse":"expand";}
return false;}}
if(window.DomLoaded)
{DomLoaded.load(tree.init)}
else
{events.add(window,"load",tree.init);}