getLeftPos = function(obj) {
		var r = obj.offsetLeft;
		while((obj = obj.offsetParent) != null) r += obj.offsetLeft;
		return r; 
}

setOpacity = function(obj, o) {
		obj.style.opacity=(o/100);
		obj.style.filter='alpha(opacity='+o+');';
}

function initMenu() {
	// On recupere le liens
	var menu = document.getElementById('menu');
	var lis = menu.getElementsByTagName('li');
	var i = 0;
	for(i = 0 ; i < lis.length ; i++) {
		if(lis[i].className=='smenu') {
			lis[i].onmouseover = function() {
				var smenu = this.getElementsByTagName('ul').item(0);
				smenu.style.display = 'block'; 
				smenu.style.top = (this.offsetTop + this.offsetHeight - 6) + 'px';
				smenu.style.left = getLeftPos(this) + 'px';
				setOpacity(smenu, 90);
			}
			lis[i].onmouseout = function() {
				this.getElementsByTagName('ul').item(0).style.display = 'none'; 
			}
		}
	}
}

function openPopup(url) {
	Fenetre=window.open(url,"Fenetre","resizable=0,scrollable=yes,scrollbars=yes ,top=60,left=60,height=350,width=500");
	setTimeout("Fenetre.focus()",10)
}

window.onload = initMenu;