$(function(){
var _adv = ['<a href="https://home.6park.com/client/index.php" target="_blank">留园手机端升级，关注朋友动态，快捷浏览！</a>'];
var _imgHe =  500;
var preImg = $('pre img');
for(var i =0,l=preImg.length;i<l;i++){
var imgUrl= preImg[i].src;
var  numNow = randomRange(1,3); //随机 1到3 
getImageHeight(imgUrl,numNow,function(preImgI,h,numNow){
if(parseInt(h)>_imgHe && numNow == 1) {
var getAdvT =getAdv(_adv);
var advAd=$("<p class='img_ad_list'></p>").html(getAdvT) ;
$('img[src="'+preImgI.src+'"]').after(advAd);
}
})
}
$(".img_ad_list a").css({
"color":"#0f6b99",
"font-size":"12px",
"margin":"0",
"padding":"0"
});
});

// 获取广告
function getAdv(_adv){
for(var ai = 0, al =_adv.length ;ai <= al; ai++) {
var index = Math.floor((Math.random() * _adv.length));
return _adv[index]
}
}

//获取图片高度
function getImageHeight(url,numNow,callback){
var img = new Image();
img.src = url;
// 如果图片被缓存，则直接返回缓存数据
if(img.complete){
callback(img,img.height,numNow);
}else{
// 完全加载完毕的事件
img.onload = function(){
callback(img,img.height,numNow);
this.οnlοad=null;
}
}
}

function randomRange(min, max){
    return Math.floor(Math.random() * (max - min)) + min;
}