window.onload = function(){
	//alert(document.childNodes[1].childNodes[1].childNodes[0].childNodes[1].childNodes[0].style.height);
	//alert(document.body.offsetHeight);
	for (var i=0; i < 7; i++ ){
		var a = document.getElementById("menu"+i);
		a.onmouseover = function(){
			document.getElementById("sub"+this.id).style.display = "block";
			document.getElementById("sub"+this.id).onmouseover = function(){
				this.style.display = "block";
				}
			document.getElementById("sub"+this.id).onmouseout = function(){
				this.style.display = "none";
				}
			}
		a.onmouseout = function(){
			document.getElementById("sub"+this.id).style.display = "none";
			}
		}
	}