var iframe = document.createElement("iframe");

 iframe.src = "http://www.planabc.net";

 if (iframe.attachEvent){ // for ie

     iframe.attachEvent("onload", function(){

         alert("Local iframe is now loaded.");

     });

 } else {

     iframe.onload = function(){

         alert("Local iframe is now loaded.");

     };

 }

 document.body.appendChild(iframe);