Javascript stopped working in Internet Explorer IE8 (IE7, IE6)

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 You may notice that Javascript is not working after the latest Microsoft update or after recently upgrading to the latest IE browser.  This will affect most submit buttons, even Microsoft products like Sharepoint will be rendered nearly useless.

Here are three tips to get things working again.

#1
Start Internet Explorer.
1. On the Tools menu, click Internet Options.
2. On the Advanced tab, click Reset.
3. In the Reset Internet Explorer Settings dialog box, click Reset to confirm.
#2

Go to the start menu, select Run
In the Run box, type in (without quotes) "regsvr32 jscript.dll"
You should receive a popup says that it registration succeeded.

#3 Enable Scripting

The following should enable scripting in Internet Explorer:

Note: To allow scripting on this Web site only, and to leave scripting disabled in the Internet zone, add this Web site to the Trusted sites zone.

1. On the Tools menu, click Internet Options, and then click the Security tab.
2. Click the Internet zone.
3. Click Custom Level.
4. In the Security Settings – Internet Zone dialog box, click Enable for Active Scripting in the Scripting section.
5. Click the Back button to return to the previous page, and then click the Refresh button to run scripts.

#4 Last resort, try Firefox

- source: http://social.answers.microsoft.com/Forums/en-US/InternetExplorer/thread/0aba6b02-5783-49ca-a27b-6636e43ed1dc