You haven't changed any Internet Explorer Internet Options, but you now receive errors similar to:
A Runtime Error has occurred.
Do you wish to Debug?
Line: <line number>
Error: <the script error>
This behavior will occur if you installed Office 2003, and selected the Web Debugging option during installation.
To workaround this behavior:
1. Open Internet Explorer.
2. On the Tools menu, press Internet Options.
3. Select the Advanced tab.
4. Check the Disable script debugging box.
5. Clear the Display a notification about every script error box.
6. Press Apply.
7. Press OK.