function mainmenu(){
$("#navigation ul ul").css({display: "none"}); // Opera Fix
$("#navigation li").hover(function(){
		$(this).find('ul:first').css({visibility: "visible",display: "none"}).slideDown(200);
		},function(){
		$(this).find('ul:first').css({visibility: "hidden"});
		});
$("#navigation li a[href='javascript:void(0);']").click(function(){
		$(this).parent().find('ul:first').css({visibility: "visible",display: "none"}).slideDown(200);
		},function(){
		$(this).parent().find('ul:first').css({visibility: "hidden"});
		});
}

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