Deffered iframe

di.js

function resizeIframe(iframe) {
    iframe.height = iframe.contentWindow.document.body.scrollHeight + "px";
}
function iFrameLoaded( id, src ) {
    var deferred = $.Deferred(),
        iframe = $( "<iframe class='hiddenFrame' onload='resizeIframe(this)' width='100%' scrollin='no'></iframe>" ).attr({
        "id": id,
        "src": src
    });

    iframe.load( deferred.resolve );
    iframe.appendTo( "footer" );

    deferred.done(function() {
        iframeLoaded();
    });

    return deferred.promise();
}

$.when(iFrameLoaded("kf", "http://site.com/")).then( function() {
    resizeIframe( document.getElementById('kf') );
});