rem: window.openDialog("chrome:global/content/about.xul", "About", "modal,chrome,resizable=yes,height=450,width=550"); 
add: window.openDialog("chrome: 
context: function goAboutDialog(){  var defaultAboutState = false;  try {    var pref = Components.classes["@mozilla.org/preferences-service;1"]                         .getService(Components.interfaces.nsIPrefBranch);    defaultAboutState = pref.getBoolPref("browser.show_about_as_stupid_modal_window");  }  catch(e) {    defaultAboutState = false;  }  if( defaultAboutState )    window.openDialog("chrome:global/content/about.xul", "About", "modal,chrome,resizable=yes,height=450,width=550");  else    window.openDialog( getBrowserURL(), "_blank", "chrome,all,dialog=no", 'about:' );}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/69e80d0877dd657a8755bcc7700d6585ceacaaa1/utilityOverlay.js/clean/suite/common/utilityOverlay.js