var head="display:''"
img1=new Image()
img1.src="images/papka_zakrita.gif"
img2=new Image()
img2.src="images/papka_otkrita.gif"

var ns6=document.getElementById&&!document.all

function change(e){
if (!document.all&&!ns6)
return
var etarget=ns6?e.target:event.srcElement
var imagetarget=etarget
if (etarget.id=="foldheader"||ns6&&etarget.parentNode.id=="foldheader"){
if (ns6&&etarget.parentNode.id=="foldheader"){
nested=etarget.parentNode.nextSibling.nextSibling
imagetarget=etarget.parentNode
}
else
nested =ns6?etarget.nextSibling.nextSibling:document.all[etarget.sourceIndex+1]
if (nested.style.display=="none") {
nested.style.display=''
imagetarget.style.listStyleImage="url(images/papka_otkrita.gif)"
}
else {
nested.style.display="none"
imagetarget.style.listStyleImage="url(images/papka_zakrita.gif)"
}
}

}

document.onclick=change