TYPO3 Core

I found another issue relate http://forge.typo3.org/issues/13525.

I generate previewlink use $this->ws->generateWorkspacePreviewLink($PID) in workspace.

But javascript error occurred because of
document.domain is empty.

So I hardcoded to fill this line with my BEdomain.

/typo3/sysext/workspaces/Resources/Private/Templates/Preview/Preview.html

---
    //document.domain = '{backendDomain}';
    document.domain = 'myBEdomain';
        ---

Is there any solution?

This issue occurred IE7 or 8. (I don't test with 9)

thanks.