function over_item(elem){
		elem.className="menu_item_over";
	}
	function out_item(elem){
		elem.className="menu_item";
	}
	function init_menu(){
		var elem = getElementsByClassName("menu_item");
		var i;
		for(i=0;i<elem.length;i++){
			_elem = elem[i];
			var lien = _elem.getAttribute("lien");
			
			if(navigator.appName== "Microsoft Internet Explorer"){
				_elem.onmouseover=function(){ over_item(this);}
				_elem.onmouseout=function(){ out_item(this);}
				if(lien!==null){
					_elem.onclick=function(){ document.location=this.getAttribute("lien");};
				}
			}
			else{
				_elem.setAttribute("onmouseover","over_item(this)");
				_elem.setAttribute("onmouseout","out_item(this)");
				if(lien!==null){
					_elem.onclick=function(){ document.location=this.getAttribute("lien");};
				}
			}
						
		}
	}

	function getElementsByClassName(className){
		var arr = new Array();
		var elems = document.getElementsByTagName("*");
		for(var i = 0; i < elems.length; i++){
			var elem = elems[i];
			if(navigator.appName== "Microsoft Internet Explorer")
				var cls = elem.getAttribute("className");
			else
				var cls = elem.getAttribute("class");
			cls=cls+"";
			if(cls==className){
				arr[arr.length] = elem;
			}
		}
		return arr;
	}