function Menu(id,speed)
{
	this.container = $(id);
	this.speed = speed;
	this.speedClose = speed/2;
	Menu.prototype.init = function()
	{
		$("#nav div > ul > li").mouseenter(this.open);
		$("#nav div > ul > li").mouseleave(this.close);
		$("#nav div > ul > li > ul").mouseleave(function(){$(this).slideUp(this.speedClose);});
		$("#nav div > img").click(this.changeMenu);
	}
	Menu.prototype.open = function(e)
	{
		$$ = $(e.target).parent();
		if ($$.children("ul:animated").length == 0)
		{
			$$.children("ul").slideDown(this.speed);
		}
	}
	Menu.prototype.close = function(e)
	{
		$$ = $(e.target).parent();
		$$.children("ul").slideUp(this.speedClose);
	}
	Menu.prototype.changeMenu = function(e)
	{
		$$ = $(e.target).parent();
		if ($$.attr("id") == "menu")
		{
			$$.animate({"height":"0px","opacity":"0"},this.speed,"",function(){
				$$.hide();
				$("#menu_pro").show().animate({"height":"48px","opacity":"1"},this.speed);
			});
			
		}
		else
		{
			$$.animate({"height":"0px","opacity":"0"},this.speed,"",function(){
				$$.hide();
				$("#menu").show().animate({"height":"48px","opacity":"1"},this.speed);
			});
		}
	}
	this.init();
}