function openMls(mls_num){ win = window.open('http://www.metrolistmls.com/cgi-bin/getoner.cfm?MLSNum=' + mls_num,'mls','fullscreen=0,width=800,height=600,scrollbars=1,toolbar=0,resizable=1'); } function createMetrolisting(){ var metroframe = document.createElement('iframe'); // create iframe element metroframe.setAttribute('src','http://www.metrolistmls.com'); // set iframe src to metrolistmls.com metroframe.style.display = 'none'; // hide iframe element var htmlBody = document.getElementsByTagName('body'); // find tag htmlBody[0].appendChild(metroframe); // append iframe immediately after body tag } window.onload = createMetrolisting;