You browse a Web page in Windows Internet Explorer 8. The Web Page contains buttons that call the window.createPopup method to create cascading pop-up windows. When you click one of the buttons, the child pop-up windows are displayed behind their parent window instead of in front of their parent window. Therefore, you may not able to access the content of the child windows.
This issue occurs if Internet Explorer Window Restrictions are enabled for the security zone of the page.
Security update information
To resolve this problem, install the most current cumulative security update for Internet Explorer. To install the most current update, visit the following Microsoft Web site:
Note This update was first included in security update Knowledge Base (KB) article 976325 (MS09-072). For more information, click the following article number to view the article in the Microsoft Knowledge Base:
976325 MS09-072: Cumulative security update for Internet Explorer
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section of this article.
For more information about Window Restrictions, visit the following Microsoft Web site: