rem: var params = Components.classes["@mozilla.org/embedcomp/dialogparam;1"] .createInstance(Components.interfaces.nsIDialogParamBlock); 
add:  const params = Components.classes["@mozilla.org/embedcomp/dialogparam;1"] .createInstance(Components.interfaces.nsIDialogParamBlock); 
context: function openHelp(topic) {  var topWindow = locateHelpWindow(helpFileURI);  if ( topWindow ) {    topWindow.focus();    topWindow.displayTopic(topic);  } else {    var params = Components.classes["@mozilla.org/embedcomp/dialogparam;1"]                           .createInstance(Components.interfaces.nsIDialogParamBlock);    params.SetNumberStrings(2);    params.SetString(0, helpFileURI);    params.SetString(1, topic);    var ww = Components.classes["@mozilla.org/embedcomp/window-watcher;1"]                       .getService(Components.interfaces.nsIWindowWatcher);    ww.openWindow(null, MOZ_HELP_URI, "_blank", "chrome,all,alwaysRaised,dialog=no", params);  }}
meta: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/8cdd1b0c5ece20e4b1e1dfb0a5f8000020c3ec1a/contextHelp.js/clean/extensions/help/resources/content/contextHelp.js