rem: const features = "chrome,centerscreen,dialog,titlebar"; 
add: const features = "chrome,dialog=no,resizable"; 
context:   checkForAddonUpdates: function ()  {    var wm =         Components.classes["@mozilla.org/appshell/window-mediator;1"].        getService(Components.interfaces.nsIWindowMediator);    var manager = wm.getMostRecentWindow("Extension:Manager-extensions");    if (!manager) {      const features = "chrome,centerscreen,dialog,titlebar";      const URI_EXTENSIONS_WINDOW =         "chrome://mozapps/content/extensions/extensions.xul?type=extensions";      openDialog(URI_EXTENSIONS_WINDOW, "", features, "updatecheck");    }    else {      manager.performUpdate();      manager.focus();    }  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/89e4d607be6443b65d814807ca91f9a8b2edbfd5/advanced.js/clean/mail/components/preferences/advanced.js