var ns6=document.getElementById&&!document.all; 
var ie4=document.all&&navigator.userAgent.indexOf("Opera")==-1; 
function blocking(nr){ 
if (document.getElementById) { 
current = (document.getElementById(nr).style.display == 
'block') ? 'none' : 'block'; 
document.getElementById(nr).style.display = current; 
} else if (document.all) { 
current = (document.all[nr].style.display == 'block') ? 
'none' : 'block'; 
document.all[nr].style.display = current; 
} 
} 

function checkcontained(e){ 
cur=ns6? e.target : event.srcElement; 


if(cur.id == 'foldheader'){ //IE 
cur = cur; 
} 
if(cur.parentNode.id == 'foldheader' ){ //Netscape & Mozilla 
cur=cur.parentNode; 
} 

if (cur.id == 'foldheader'){ // Dans tous les cas 
curnode = cur; 
while (curnode != null && curnode.nodeName != "DIV"){ 
curnode = curnode.nextSibling; 
} 
if(curnode != null){ 
if(curnode.style.display=="none"){ 
curnode.style.display="" 
}else{ 
curnode.style.display="none" 
} 
} 
} 
return 
} 
document.onclick=checkcontained