Microsoft KB Archive/331869

= The OnBeforeUnload and OnUnload Events Are Not Triggered in Internet Explorer 6 SP1 If the Body Tag Is Empty =

Article ID: 331869

Article Last Modified on 11/15/2007

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APPLIES TO

 Microsoft Internet Explorer 6.0 Service Pack 1, when used with:  Microsoft Windows XP Home Edition

 Microsoft Windows XP Professional

 Microsoft Windows XP Media Center Edition 2002

 Microsoft Windows XP Tablet PC Edition</li></ul>

 Microsoft Windows 2000 Advanced Server</li></ul>

 Microsoft Windows 2000 Datacenter Server</li></ul>

 Microsoft Windows 2000 Professional Edition</li></ul>

 Microsoft Windows 2000 Server</li></ul>

 Microsoft Windows NT Server 4.0 Standard Edition</li></ul>

 Microsoft Windows NT Server 4.0, Terminal Server Edition</li></ul>

 Microsoft Windows NT Workstation 4.0 Developer Edition</li></ul>

 Microsoft Windows Millennium Edition</li></ul>

<ul> <li>Microsoft Windows 98 Second Edition</li></ul>

<ul> <li>Microsoft Windows 98 Standard Edition</li></ul> </li></ul>

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This article was previously published under Q331869

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IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry

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SYMPTOMS
The OnBeforeUnload and OnUnload events are not triggered in Internet Explorer 6 Service Pack 1 (SP1) if the Body tag is blank. The following sample HTML code demonstrates this problem: <HTML> <HEAD> <SCRIPT> function unload {   alert(&quot;unload&quot;) } function beforeunload {   alert(&quot;beforeunload&quot;) } function resize {   alert(&quot;resize&quot;) } </SCRIPT>

<SCRIPT for=&quot;window&quot; event=&quot;onload&quot;> window.onunload = unload; window.onbeforeunload = beforeunload; window.onresize = resize; alert(&quot;loading&quot;); </SCRIPT>

</HEAD> <BODY> </BODY> </HTML>

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RESOLUTION
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

The English version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel. <pre class="fixed_text">  Date         Time   Version         Size       File name -  24-Oct-2002  15:45  6.00.2800.1132  2,788,352  Mshtml.dll

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STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

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MORE INFORMATION
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

This hotfix adds a registry setting that is installed with the hotfix. The registry setting is:

Key =

Value = : REG_SZ (Set to Yes to enable the fix)

If you apply a later hotfix, security update, or service pack without installing this hotfix, you must set the registry value manually.

Keywords: kbhotfixserver kbbug kbfix kbie600presp2fix kbqfe KB331869

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