document.observe('dom:loaded', function() {
	var q = document.location.search || document.location.hash;
	$$("#top ul li").each(function(el) {
		el.observe("mouseover", onMouseOver_sousmenu);
		el.observe("mouseout", onMouseOut_sousmenu);
	});
});
function onMouseOver_sousmenu(){
	this.addClassName(this.id+'_actif');
}
function onMouseOut_sousmenu() {
	//this.className = this.id+"_actif";
	this.removeClassName(this.id+"_actif");
}