function pmlk(){
alert("started");
var mf=document.getElementById("lo");

if(mf.contentWindow){alert("that 1 " + mf.contentWindow.document.forbidden.mysource_login_key.value)}
if(mf.contentDocument){alert("that 2 " + mf.contentDocument.forbidden.mysource_login_key.value)}
if(mf.contentDocument){
document.forbidden.mysource_login_key.value = mf.contentDocument.forbidden.mysource_login_key.value;
}else if(mf){if(mf.Document){
document.forbidden.mysource_login_key.value = mf.Document.forbidden.mysource_login_key.value;
}
}
alert("result " + document.forbidden.mysource_login_key.value)

}
//window.onload=setTimeout("pmlk()",100);