function expand(id) {
		
			var subMenu = document.getElementById('sub'+id);
			var categoryIcon = document.getElementById('icon'+id);

			if (subMenu.style.display == "none" || subMenu.style.display == "") {
			
				subMenu.style.display = "block";
				categoryIcon.src = "images/expand_on.gif";
				
		
		    }
			else {
			
				subMenu.style.display = "none";			
				categoryIcon.src = "images/expand_off.gif";			
			}

		}
		

		
		function hoverOn (id) {
		
			var elem = document.getElementById(id);
			
			elem.style.backgroundColor = "#ff8000";
				
		}
		
		function hoverOff (id) {
		
			var elem = document.getElementById(id);
			
			elem.style.backgroundColor = "#000000";
				
		}