function mainmenu(){
$(" #nav ul ").css({display: "none"});  //Opera Fix
$(" #hnav li").hover(function(){
		$(this).find('ul:first').css({visibility: "visible",display: "none"}).slideDown(200);
		//$(this).find('ul:first').css({opacity:0, visibility: "visible"}).animate({opacity:0.9},400);
		},function(){
		$(this).find('ul:first').css({visibility: "hidden"});
		});
}

 $(document).ready(function(){
	mainmenu();
});