var menu_act="";
var timer=0;

function voir_menu(m){
	if(timer!=0){
		clearTimeout(timer);
	}
	if(menu_act!=""){
		obj=document.getElementById(menu_act);
		obj.style.display="none";
		menu_act="";
	}
	obj=document.getElementById(m);
	obj.style.display="block";
	menu_act=m;
}

function cache_menu_2(){
	if(menu_act!=""){
		obj=document.getElementById(menu_act);
		obj.style.display="none";
		menu_act="";
	}
}

function cache_menu(){
	if(menu_act!=""){
		timer=setTimeout("cache_menu_2()",500)
	}
}