var currMenu = null;

function mainmenu(sender,classe){
	sender = document.getElementById(sender);
	if(sender){
		sender = (sender.tagName=="UL") ? sender : sender.childNodes[0];
		sender = (sender && sender.tagName=="UL") ? sender : sender.nextSibling;
		if(sender){
			if(sender.tagName=="UL"){
				if(classe!=""){
					var uls = sender.getElementsByTagName("UL");
					for(i=0;i<uls.length;i++){
						if(uls[i].className==classe) currMenu = uls[i].parentNode;
					}
					if(currMenu) currMenu.className+=" shover";
				}
				var lis = sender.getElementsByTagName("LI");
				for(i=0;i<lis.length;i++){
					if(lis[i].className!="vide"){
						lis[i].onmouseover=function() {
							if(currMenu) currMenu.className=currMenu.className.replace("shover", "");
							this.className+=" shover";
							//if(document.all) this.style.zIndex=100;
						}
						lis[i].onmouseout=function() {
							this.className=this.className.replace("shover", "");
							if(currMenu) if(currMenu.className.indexOf("shover")==-1) currMenu.className+=" shover";
							//if(document.all) this.style.zIndex=1;
						}
					}
				}
			}else{
				alert("Le sender n\'est pas un UL");
			}
		}
	}
}