rem: window.frames["accountCentralPane"].location = "about:blank"; 
add: window.frames["accountCentralPane"].location.href = "about:blank"; 
context: function HidingAccountCentral(){    try    {        window.frames["accountCentralPane"].location = "about:blank";    }    catch (ex)    {        dump("Error hiding AccountCentral page -> " + ex + "\n");    }    gAccountCentralLoaded = false;}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/8ed8112b400d8b59414e6d133a126a1cb71b60b6/mailWindow.js/buggy/mail/base/content/mailWindow.js