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?"hover":"";
con.className=i==cursel?"display-block":"display-none";
}
}

var getXY = function(dom){
			var el = dom;
			var width = el.offsetWidth;//el.clientWidth;
			var height = el.offsetHeight;//el.clientHeight;
			var top = 0;
			var left = 0;
				top = el.offsetTop;
				left = el.offsetLeft;
				el = el.offsetParent;
				while(el)
				{
					top += el.offsetTop;
					left += el.offsetLeft;
					el = el.offsetParent;
				}
			var rec = {};
			rec = {"left":left,"top":top,"width":width,"height":height};
			return rec;
	}