Event Keycode Does Not Return Proper Value for ARROW Keys

A Web page that contains a Window.event.keyCode command may not return the proper value when you press the UP or DOWN ARROW key.

This issue occurs because the Mshtml.dll file contains code that cancels the UP and DOWN ARROW key events when the keyboard focus in on an HTML Input box.

A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Internet Explorer service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.


The English version of this fix should have the following file attributes or later:

Microsoft has confirmed that this is a problem in Internet Explorer 5.