var iframe = document.createElement("iframe");
iframe.src = "http://www.phpstudy.net";

if (!/*@cc_on!@*/0) { //if not IE
iframe.onload = function(){
alert("Local iframe is now loaded.");
};
} else {
iframe.onreadystatechange = function(){
if (iframe.readyState == "complete"){
alert("Local iframe is now loaded.");
}
};
}
document.body.appendChild(iframe);