/*酒店的十个城市三字码*/
var hotelCitys = new Array("PEK","SHA","CAN","SZX","HKG","MAC","CTU","CKG","HGH","SYX");
/*机票的八个城市三字码*/
var _planeCitys = new Array("PEK","SHA","CAN","SZX","CTU","NKG","WUH","HGH");
/*旅游的四个城市三字码*/
var _pkgCitys = new Array("PEK","SHA","CAN","SZX");

$(function(){


    /* 初始化广告图片*/
    readyImg();
    

});

/* jQuery图片预加载插件  start */
jQuery.fn.loadthumb = function(options) {
	options = $.extend({
		 src : ""
	},options);
	var _self = this;
	_self.hide();
	var img = new Image();
	$(img).load(function(){
		_self.attr("src", options.src);
		_self.fadeIn("slow");
	}).attr("src", options.src);  //.atte("src",options.src)要放在load后面，
	return _self;
}
function readyImg()
{
	var len  = $(".num > li").length;
	var index = 0;
	var adTimer;
	$(".num li").mouseover(function(){
	index  =   $(".num li").index(this);
	showImg(index);
	}).eq(0).mouseover();	
	//滑入 停止动画，滑出开始动画.
	$('#id_ad').hover(function(){
		 clearInterval(adTimer);
	 },function(){
		 adTimer = setInterval(function(){
			index++;
			if(index==len){index=0;}
			showImg(index);				
		  } , 10000);
	}).trigger("mouseleave");
}
var catchImgs=new Array();
function showImg(index)
{
    var flagImg=false;
    for(var k=0;k<catchImgs.length;k++)
    {
       if(catchImgs[k]==index)
       {
          flagImg= true;
          break;
       }
    }//end for
    if(!flagImg)
    {
        $("#id_ad").removeClass("ad").addClass("adfirst");
        $(".class_img").hide();
		//运用图片预加载插件
		$("#id_img_"+index).loadthumb({src:  src[index] });
		catchImgs.push(index)
	}
	else
	{
	    $("#id_ad").removeClass("adfirst").addClass("ad");
	    $(".class_img").hide();
	    $("#id_img_"+index).fadeIn("slow");
	}
	
	$(".num li").removeClass("on").eq(index).addClass("on");
	$("#id_showImage").attr("href",_href[index]).attr("name","flashAd"+index);
}
/* jQuery图片预加载插件  end */