var DropDownMenu = Class.create();

DropDownMenu.prototype = {

 initialize: function(menuElement) {
	if(menuElement != null){
		menuElement.childElements().each(function(node){
			// if there is a submenu
			var submenu = $A(node.getElementsByTagName("ul")).first();
			if(submenu != null){
				// make sub-menu invisible
				Element.extend(submenu).setStyle({display: 'none'});
				// toggle the visibility of the submenu
				menuElement.onclick = function(){
						Element.show(submenu);//toggle(submenu);
				}
			}
		});
	}
}

};