In Internet Explorer 6 or 7:
  • On the menu at the top of the browser, click on "Tools" then "Internet Options..."
  • Click on the "Security" tab
  • Click on the "Custom Level" button
  • Scroll down to the Scripting area. Under "Active Scripting," select "Enable"
  • Hit OK until box is closed.

In FireFox
  • On the menu at the top of the browser, click on "Tools" then "Options..."
  • Click on the "Content" tab
  • Check the box labeled "Enable JavaScript"
  • Hit OK