function m2lform() {
  var url = document.getElementById('m2lurl').href;
  var height = document.getElementById('m2lheight').innerHTML;
  var width = document.getElementById('m2lwidth').innerHTML;
  document.getElementById('m2lform').innerHTML = '<iframe style="height:' + height + ';width:' + width + '" src="' + url + '_i"></iframe><p style="font-size:x-small"><a href="' + url + '">Having problems signing up?</a></p>';
}