/**异步加载JS的方法*/

async.js

/**异步加载JS的方法*/
function loadJS(url,callback,el){
    var isIE = !!window.ActiveXObject,
        isIE6 = isIE && !window.XMLHttpRequest,
        script = document.createElement("script"),
        head = isIE6 ? document.documentElement : document.getElementsByTagName("head")[0];
    script.type = "text/javascript";
    script.async = true;
    if(script.readyState){
        script.onreadystatechange=function(){
            if(script.readyState=="loaded"||script.readyState=="complete"){
                script.onreadystatechange = null;
                if (callback) {
                    callback();
                }
            }
        }
    }else{
        script.onload=function(){
            if (callback) {
                callback();
            }
        }
    }
    script.src = url;
    if (el) {
        document.getElementById(el).appendChild(script);
    } else {
        head.insertBefore(script, head.firstChild);
    }
};
// try{
//     loadJS("http://xxx/s?st=__dh&site=dh123&node=1234&snode=123");
// }catch(e){}
loadJS("js/jquery.js",function(){
    loadJS("js/dome.js",function(){
    });
});