<!--
/** 
* Based on Folding Menu Tree 
* Dynamic Drive (www.dynamicdrive.com)
* For full source code, installation instructions,
* 100's more DHTML scripts, and Terms Of
* Use, visit dynamicdrive.com
*
* Updated to support arbitrarily nested lists
* by Mark Quinn (mark@robocast.com) November 2nd 1998
*/

var head="display:''"
img1=new Image()
img1.src="img/fold.gif"
img2=new Image()
img2.src="img/open.gif"

function change(){
if(!document.all)
return
if (event.srcElement.id=="foldheader") {
var srcIndex = event.srcElement.sourceIndex
var nested = document.all[srcIndex+1]
if (nested.style.display=="none") {
nested.style.display=''
event.srcElement.style.listStyleImage="url(img/open.gif)"
}
else {
nested.style.display="none"
event.srcElement.style.listStyleImage="url(img/fold.gif)"
}
}
}

document.onclick=change

//-->