$(function(){
var Ifie   =document.all;

var nav    = $(".nav ul li:gt(0)");
var subnav = $("<div>",{"class":"subnav"});
subnav.appendTo("body");
var subnav2 = $("<div>",{"class":"subnav2"});
subnav2.appendTo("body");
var this_nav;

var showmenu;
var closemenu;
var showsubnav2=0;
var nav_span = $(".nav ul li a span");
var now_subnav=-1;
	nav.mouseover(function(){
		var index_nav = nav.index(this);
		//if(now_subnav==index_nav) return false;
		//if(index_nav>0&&index_nav<9) {
				//closesub();
				showsubnav2=0;
				subnav2.css({display:"none"});
				subnav.css({display:"block"});
				//subnav.html('载入中……');
				this_nav= nav.eq(index_nav);
				var offset = this_nav.offset();
				var rid     = this_nav.children().attr("href").match(/[\d]+/);
				var _left   =100;
				subnav.css({left:offset.left+10+"px"});
				this_nav.addClass("on").siblings("li").removeClass("on");
				clearTimeout(closemenu);
				showmenu = window.setTimeout(showsub, 20);
				
				$.ajax({
				   type: "POST",
				   url: "ajax/subnav.ajax.php",
				   data: "rid="+rid,
				   success: function(e){
						if(e==-1) alert('子导航初始化失败');
						subnav.html(e);
						var subnav_text=$(".subnav a");
						show_subnav2(subnav_text);
						}
				});
				now_subnav=index_nav;

			//}
	}).mouseout(function(){
			clearTimeout(showmenu);
			closemenu = window.setTimeout(closesub, 20);
		});
	
		
		subnav.mouseover(function(){
				clearTimeout(closemenu);
				showmenu = window.setTimeout(showsub, 20);
			}).mouseout(function(){
				clearTimeout(showmenu);
				closemenu = window.setTimeout(closesub, 20);
				}).click(function(){
					//alert($(this).children().attr('href'));
					if($(this).children().attr('href')=='javascript:;'){
							//alert(subnav2.children().eq(0).attr('href'));
							window.location.href=subnav2.children().eq(0).attr('href');
							return false;
						}		
			});
		subnav2.mouseover(function(){
				clearTimeout(closemenu);
				showmenu = window.setTimeout(showsub, 20);
			}).mouseout(function(){
				clearTimeout(showmenu);
				closemenu = window.setTimeout(closesub, 20);
				});
		
	
function show_subnav2(subnav_text){
			
			subnav_text.mouseover(function(){
				var index_nav = subnav_text.index(this);
				var this_subnav   = subnav_text.eq(index_nav);
				
				if(this_subnav.attr("href")=='javascript:;'){
					showsubnav2=1;
					subnav2.css({display:"block"});
					if(Ifie) subnav2.css({left:parseInt(subnav.css("left"))-80+'px',top:134+index_nav*25+"px"});
					else     subnav2.css({left:parseInt(subnav.css("left"))-80+'px',top:164+index_nav*25+"px"});
					var rid=this_subnav.attr("name");
					$.ajax({
					   type: "POST",
					   url: "ajax/subnav.ajax.php",
					   data: "rid="+rid,
					   success: function(e){
							if(e==-1) alert('子导航初始化失败');
							//alert(e)
							subnav2.html(e);
							}
					});
				}						 
												 
			});
	}
	
	
function closesub(){
		subnav.css({display:"none"});
		//subnav.remove();
		//subnav2.remove();
		this_nav.removeClass("on");
		subnav2.css({display:"none"});
	}

function showsub(){
		subnav.css({display:"block"});
		if(showsubnav2) subnav2.css({display:"block"});
		this_nav.addClass("on");
	}

});

	
function leftsubnav(subroot){
		var subnav = $("#"+subroot);
		if(subnav.css("display")=='none'){
			$(".leftsubnav").css({display:"none"});
			subnav.css({display:"block"});
			$(".left ul li a").removeClass("on");
			subnav.prev().children().addClass("on");
			}
		else subnav.css({display:"none"});
	}