1. Internet Explorer：
1. On the Tools menu,
2. Click Internet Options.
3. Click the Security tab. Click the Internet zone.
4. If you do not have to customize your Internet security settings, click Default Level.
5. Click the ok button.

2. Firefox：
1. On the Tools menu.
2. Click Options.
3. On the Content tab, click to select the Enable JavaScript check box.
4. Click the ok button.