Acces denied Window.ShowFileInfo' when calling method

i got a small problem with CkFinder



PAGE_1 is in domaine_1.site.com

PAGE_2 is in domaine_2.site.com


CkFinder is in PAGE_2 (all the CkFinder code is in domaine_2.site.com)... PAGE_2 is my web application





In PAGE_1, i open a popup window (to start my web application)

window.open(domaine_2.site.com/PAGE_2)






With Ineternet Explorer 7
In PAGE_2
CkFinder work.
But if i close PAGE_1, CkFinder stop working in PAGE_2 (when i refresh PAGE_2)

Error (in PAGE_2) when a close PAGE_1 : ...Not server application.........




With FireFox
In PAGE_2
CkFinder dont work.
But if i close PAGE_1, CkFinder start working in PAGE_2 (when i refresh PAGE_2)

Error (in PAGE_2) with FireFox before i close PAGE_1 :

Erreur : [Exception... " Acces denied Window.ShowFileInfo' when calling method: [nsIOnReadyStateChangeHandler::handleEvent]" nsresult: "0x8057001e (NS_ERROR_XPC_JS_THREW_STRING)" location: "<unknown>" data: no]


???