function expand($itemId) {
				
				
				/* counts number of menu items in the div #mainNav */  
				var parents = document.getElementById("mainNav");
        var countItems = parents.getElementsByTagName("LI").length;
        
        /* sets all the menu-items in the div #mainNav & #subMenu unselected */
				for (var x = 1; x <= countItems; x++) {
			   document.getElementById(x).className="unselected";
			  
			  /* checks if a mainNav item has a subMenu  */
			   if(document.getElementById("subMenu"+x)) {
			   	document.getElementById("subMenu"+x).className="";
			  	}
			   }
			  
			  /* sets the Selected items selected by changing the class */
			  document.getElementById($itemId).className="selected";
			  if(document.getElementById("subMenu"+$itemId)) {
					document.getElementById("subMenu"+$itemId).className="subActive";
				}
			}