jQuery.noConflict();
     
// Put all your code in your document ready area
jQuery(document).ready(function($){

	$(" #navigation ul ").css({display: "none"}); // Opera Fix
	$(" #navigation li").hover(function(){
			$(this).find('ul:first').css({visibility: "visible",display: "none"}).show(400);
			},function(){
			$(this).find('ul:first').css({visibility: "hidden"});
			});

});