//Smart Folding Menu tree- By Dynamic Drive (rewritten 03/03/02)
//For full source code and more DHTML scripts, visit http://www.dynamicdrive.com
//This credit MUST stay intact for use
// modified and corrected J M Stratford 14 March 2006

img1=new Image()
img1.src="images/fold.gif"
img2=new Image()
img2.src="images/open.gif"

var ns6=(document.getElementById&&!document.all||window.opera)
var ie4=document.all&&navigator.userAgent.indexOf("Opera")==-1

function checkcontained(e){
  var iscontained=0
  cur=ns6? e.target : event.srcElement
  i=0
  if (cur.id=="foldheader")
    iscontained=1
  else
    while (ns6&&cur.parentNode||(ie4&&cur.parentElement)){
      if (cur.id=="foldheader"||cur.id=="foldinglist"){
        iscontained=(cur.id=="foldheader")? 1 : 0
        break
      }
      cur=ns6? cur.parentNode : cur.parentElement
    }

  if (iscontained){
    var foldercontent=ns6? cur.nextSibling.nextSibling : cur.all.tags("UL")[0]
    if (foldercontent.style.display=="none"){
      foldercontent.style.display=""
      cur.style.listStyleImage="url(images/open.gif)"
    } else {
      foldercontent.style.display="none"
      cur.style.listStyleImage="url(images/fold.gif)"
    }
  }
}

if (ie4||ns6)
document.onclick=checkcontained