function chooseGall() {
  o=document.forms['galleryform'];
  o.action='gallery.cfm?gid='+this.value;
  o.submit();
}

function forminit() {
  document.getElementById('gobutt').style.display = 'none';
  document.getElementById('gid').onchange = chooseGall;
}

addEvent(window, 'load', forminit);