非阻塞动态加载javascript广告的方法，以下是实现代码：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "">
<html xmlns="">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>广告代码最后加载</title>
</head>
<body>
<div id="open"></div>
<script>
//ad("open",'alert("ddd")');
var Script = {
inject:function (htmlId,jsCode){
var script = document.createElement("script");
script.text = jsCode;
document.getElementById(htmlId).appendChild(script);
},
loadeing:function (url,charset,callback){
var script = document.createElement("script");
script.src = url;
script.charset = charset;
script.loaded= false;
script.onload = function(){
script.loaded = true;
callback();
};
script.onreadystatechange = function(){
if(!script.onloadDone && ("loaded"==script.readyState || "complete"==script.readyState)){
script.onload();
}
};
document.getElementsByTagName("head")[0].appendChild(script);
}
}
JSScript.loadeing("引用的JS","gb2312",initAd)
function initAd(){
JSScript.inject("open",'BAIDU_CLB_singleFillSlot("72893")');
}
</script>
</body>
</html>
