function expand(uploaderid) {
  var showclass="";
  var img=document.getElementById("expand_"+uploaderid);
  if (img!=null) {
    if (img.alt=="+") {
      showclass="visible";
      img.alt="-";
      img.src="images/minus.gif";
      img.title="collapse";
      window.status=img.title;
    } else {
      showclass="hidden";
      img.alt="+";
      img.src="images/plus.gif";
      img.title="expand";
      window.status=img.title;
    }
    for (var i=0; i<numrows; i++) {
      var row=document.getElementById("row_"+uploaderid+"_"+i);
      if (row==null) {
        break;
      } else {
        row.className=showclass;
      }
    }
  }
  return true;
}