function showhide(layer_ref, state) {
								
				if (document.all) { //IS IE 4 or 5 (or 6 beta) 
				eval( "document.all." + layer_ref + ".style.display = state"); 
				} 
				if (document.layers) { //IS NETSCAPE 4 or below 
				document.layers[layer_ref].display = state; 
				} 
				if (document.getElementById &&!document.all) { 
				hza = document.getElementById(layer_ref); 
				hza.style.display = state; 
				} 
				} 
				
				<!-- set menu item active-->
				function setactive(menuitem){
					
				}