$(document).ready(function(){
	var subMenuShow = 0;
	var closeSubMenu;
	$('div#menu>ul>li>a').hover(
		function () {
			$(this).parent().css("background-image", "url(img/menu_bg_active.gif)");
			if(subMenuShow!=0){
				$(subMenuShow).slideUp('fast');
			}
			$('div#subMenu'+this.id).slideDown('fast');
			subMenuShow = 'div#subMenu'+this.id;
			$('div#subMenu'+this.id).hover(
				function(){
					clearInterval(closeSubMenu);
				},
				function(){
					$(this).slideUp('fast');
				}
			);
			clearInterval(closeSubMenu);
		},
		function (){
			$(this).parent().css("background-image", "url(img/menu_bg.gif)");
			closeSubMenu = setInterval("$.closeMenu()",100);
		}
	);
	$('div#menu>ul>li:last-child >a').hover(
		function () {
			$(this).parent().css("background-image", "url(img/menu_bg_active.gif)");
			$("li#menuEnd").css("background-image", "url(img/menu_bg_active.gif)");
		},
		function (){
			$(this).parent().css("background-image", "url(img/menu_bg.gif)");
			$("li#menuEnd").css("background-image", "url(img/menu_bg.gif)");
		}
	);
	
	$.extend({
	   closeMenu:function(){
			clearInterval(closeSubMenu);
			$(subMenuShow).slideUp('fast');
	   }
	});
});