function mainmenu(){
/*
$("#nav ul").css({display: "none"}); // Opera Fix
$("#nav li").hover(function(){
		$(this).find('ul:first').css({visibility: "visible",display: "none"}).show(400);
		},function(){
		$(this).find('ul:first').css({visibility: "hidden"});
		});*/
    
		//$$("#nav ul").setStyles({display: "block"}); // Opera Fix
    $$("#nav li").addEvent('mouseenter', function(e){
		  var ulf = this.getChildren()[1];
		  ulf.setStyles({display: "block", visibility: "visible", opacity: 0});
		  var showul = new Fx.Styles(ulf, {duration: 400, wait:false, transition: Fx.Transitions.Sine.easeOut});
		  showul.start({
        opacity: 1
      });
    });
    /*$$("#nav ul").addEvent('mouseenter', function(e){
		  this.setStyles({display: "block", visibility: "visible"});
    });*/
    $$("#nav li").addEvent('mouseleave', function(e){
		  var ulf = this.getChildren()[1];
		  ulf.setStyles({display: "none", visibility: "hidden"});
    });
}
  
window.addEvent('domready', function(){
	mainmenu();
});