function create_hover_effect() {
			
			var menubar = document.getElementById("menubar");
			
				for (i in menubar.childNodes) {
					var node = menubar.childNodes[i];
		
					if(node.nodeName == "LI") {
						node.onmouseover = function() { 
							this.className += " hover"; 
						}
						node.onmouseout = function () { 
							this.className = this.className.replace(" hover", ""); 
						}
					}
				}
		}