The embed.js script

embed.js

function parseQuery ( query ) {
    var Params = new Object ();
    if ( ! query ) return Params;
    var Pairs = query.split(/[;&]/);
    for ( var i = 0; i < Pairs.length; i++ ) {
        var KeyVal = Pairs[i].split('=');
        if ( ! KeyVal || KeyVal.length != 2 ) continue;
        var key = unescape( KeyVal[0] );
        var val = unescape( KeyVal[1] );
        val = val.replace(/\+/g, ' ');
        Params[key] = val;
    }
    return Params;
}

var myScript = document.getElementById('my-embed');

var queryString = myScript.src.replace(/^[^\#]+\#?/,'');

var params = parseQuery( queryString );

var my_url = encodeURIComponent(window.location.href);

document.getElementById('my-embed-content').innerHTML = '<iframe src="http://yourdomain.com/embed.php?acc='+params['acc']+'&url='+my_url+'" width="'+params['w']+'" height="'+params['h']+'"  frameborder="0" scrolling="auto" ></iframe>';