Do you have to disable JavaScript, sometimes known as JScript, for some reason? Here are the step-by-step instructions for majority of the browsers.
Navigator 3.x
Go to "Options | Network Preferences..." from the main menu
Change to the "Languages" tab
To enable: make sure "Enable JavaScript" check box is checked
To disable: make sure "Enable JavaScript" check box is unchecked
Restart the browser
Communicator 4.x
Go to "Edit | Preferences..." from the main menu
Select "Advanced" panel
To enable: make sure "Enable JavaScript" check box is checked.
To disable: make sure "Enable JavaScript" check box is unchecked.
Restart the browser
Explorer 3.x
Go to "View | Options..." from the main menu
Change to the "Security" tab
To enable: make sure "Run ActiveX scripts" check box is checked
To disable: make sure "Run ActiveX scripts" check box is unchecked
Restart the browser
Explorer 4.x
Go to "View | Internet Options..." from the main menu
Change to the "Security" tab
Select "Custom" and click on the "Settings..." button
To enable: make sure "Enable" is selected under "Active scripting"
To disable: make sure "Disable" is selected under "Active scripting"