var Menu = ["nav"];
window.onload = function(){
	var li = document.getElementById(Menu).getElementsByTagName("li");
	for(var i=0;i<li.length;i++){
		var li_ul = li[i].getElementsByTagName("ul");
		if(li_ul.length){
			li[i].onmouseout = function(){
				this.getElementsByTagName("a")[0].style.backgroundColor = "";
				this.getElementsByTagName("ul")[0].style.display ="none";
			}
			if(li[i].parentNode.id!=Menu){
				li[i].onmouseover= function(){
					/*this.getElementsByTagName("a")[0].style.backgroundColor = "#F00"; */
					this.getElementsByTagName("ul")[0].style.display ="block";
				}
			}
		}
	}
}
function ShowMenu(obj){
	var li = document.getElementById(Menu).getElementsByTagName("li");
	for(var c=0;c<li.length;c++){
		if(li[c].parentNode.id==Menu){
			li[c].getElementsByTagName("a")[0].className = "";
		}
	}
	obj.getElementsByTagName("a")[0].className = "ok";
	/*obj.getElementsByTagName("a")[0].style.backgroundColor = "#F00";*/ 
	obj.getElementsByTagName("ul")[0].style.display ="block";
}
function setTab(name,cursel,n){
	for(i=1;i<=n;i++){
		var menu=document.getElementById(name+i);
		var con=document.getElementById("con_"+name+"_"+i);
		menu.className=i==cursel?"on":"off";
		con.style.display=i==cursel?"block":"none";
	}
}