Internet Explorer 6, 7, 8:
1. On the Tools menu, click Internet Options.
2. Click the Security tab.
3. Click Custom Level.
4. Scroll to Scripting. Under Active scripting, click Enable.
5. Click OK twice.
Netscape 6
1. On the Edit menu, click Preferences.
2. Click Advanced.
3. Select the Enable JavaScript for Navigator check box.
4. Click OK.
FireFox
1. Click Tools
2. Click Options.
3. Click Content
4. Keep the Checkbox checked of Enable JavaScirpt.
5. Click OK.