function roll(image1, reference1)
{
  if (document.images) {document.images[image1].src = reference1;}
}

function popup(url,name,width,height) {
        if (! width) { width=525; }
        if (! height) { height=600; }
        popwindow=window.open(url,name,'menubar=no,scrollbars=no,dependent,width='+width+',height='+height+',left=164,top=4');
}