function loadScript(url, callback){

 var script = document.createElement("script")
 script.type = "text/javascript";

 if (script.readyState){  //IE
    script.onreadystatechange = function(){
     if (script.readyState == "loaded" ||
         script.readyState == "complete"){
           script.onreadystatechange = null;
           if (callback!=""){
            funcfinal();
           }
           //callback();
           //funcfinal();
        }
     };
 } else {  //Others
   script.onload = function(){
       if (callback!=""){
        funcfinal();
       }
       //callback();
     //funcfinal();
   };
 }

 script.src = url;
 document.getElementsByTagName("head")[0].appendChild(script);
}