var contents;
var rand_no = Math.ceil(Math.random() * 100000000);
function isString(o){return typeof o === 'string';}
function getDom(el){
	if (el && (el.tagName || el.item)) {
        return el;
    }
    if (isString(el) || !el) {
        return this.document.getElementById(el);
    }
    if (el.length !== undefined) {
        var c = [];
        for (var i = 0, len = el.length; i < len; ++i) {
            c[c.length] = getDom(el[i]);
        }
        return c;
    }
    return el; // some other object, just pass it back
}
contents = '';
contents += '<iframe';
contents += ' src="' + id + 'rd/' + rand_no + '/"';
contents += ' frameborder="0"';
contents += ' style="width:160px; height:230px; overflow:hidden; border:0;"';
contents += ' ></iframe>';
getDom('placeholder').innerHTML = contents;