Note: After saving, you have to bypass your browser's cache to see the changes. Google Chrome, Firefox, Microsoft Edge and Safari: Hold down the ⇧ Shift key and click the Reload toolbar button. For details and instructions about other browsers, see Wikipedia:Bypass your cache.
topaz.comm = {
doreq:function(url,postdata,headers) {
  var req = topaz.util.xmlhttpreq();
  req.open(postdata?"POST":"GET", url, false);
  for(header in headers) {
    req.setRequestHeader(header,headers[header]);
  }
  req.send(postdata||null);
  return req;
}
};