<!--
var head="display:''"
img1=new Image()
img1.src="../image/menu/close.gif"
img2=new Image()
img2.src="../image/menu/open.gif"

function change(){
  var srcIndex
  var nested
  var temp
  if(!document.all)
    return
  if (event.srcElement.id=="foldheader") {
    srcIndex = event.srcElement.sourceIndex
    nested = document.all[srcIndex+2]
    temp=document.all[srcIndex+1]
    if (nested.style.display=="none") {
      nested.style.display=''
      temp.src="../image/menu/open.gif" }
    else {
      nested.style.display="none"
      temp.src="../image/menu/close.gif"}
   }
}

document.onclick=change

//-->