$(document).ready(function(){

	$("ul#mainlevel li.submenu").dropdown({ 
	});
	
	$("ul#mainlevel li.submenu li.subsubmenu").subdropdown({ 
	});

});

$.fn.dropdown = function() {
		$(this).hover( function(){
		$('ul:first',this).css('visibility', 'visible');},
		function(){
		$('ul:first',this).css('visibility', 'hidden');
	}); }
		
$.fn.subdropdown = function() {
		$(this).hover( function(){
		$('ul:first',this).css('visibility', 'visible');},
		function(){
		$('ul:first',this).css('visibility', 'hidden');
	}); }