Internet Explorer

  1. Open the “Tools” menu.
  2. Select “Internet Options”, to open the Internet Options dialog box.
  3. Click the “Security” tab.
  4. Click the “Internet” symbol (a globe).
  5. Click the “Custom Level…” button, to open the Security Settings dialog box.
  6. In the Settings list, scroll down to “Scripting”.
  7. Under Active Scripting, click the radio button to the left of “Enable”, so that a coloured dot appears in it. (Click “Disable” if you want to disable JavaScript.)

    Enabling JavaScript in Internet Explorer 7

  8. (If you are unsure about the other Security Settings, please check with your Network Administrator.)
  9. Click “OK” to close the Security Settings dialog box.
  10. Click “Yes” in the Warning! message box.
  11. Click “OK” to close the Internet Options dialog box.

Firefox

  1. Open the “Tools” menu (Windows) or the Firefox menu (OS X).
  2. Select “Options…” (Windows) or “Preferences…” (OS X), to open a dialog box.
  3. In the row of coloured icons at the top, click “Content”.
  4. Click the check box to the left of “Enable JavaScript” so that a tick appears. (Click again to remove the tick if you want to disable JavaScript.)

    Enabling JavaScript in Firefox

  5. Click “OK” to close the dialog box.

Google Chrome

  1. Click the spanner icon near the top right to open the menu.
  2. Select “Options”, to open the Google Chrome Options dialog box.
  3. In the Google Chrome Options dialog box, click the “Under the Bonnet” tab.
  4. In the Privacy section, click the “Content settings…” button.
  5. In the Content Settings dialog box, click “JavaScript” in the list of Features.
  6. Click the “Allow all sites to run JavaScript (recommended)” radio button.

    Google Chrome Options dialog box
  7. (Click the “Do not allow any site to run JavaScript” radio button if you want to disable JavaScript.)
  8. Click “Close” to close the Content Settings dialog box.
  9. Click “Close” to close the Google Chrome Options dialog box.

Opera

  1. Open the “File” menu (version 6) or the “Tools” menu (versions 7, 8 and 9).
  2. Point to “Quick preferences”.
  3. In the submenu that appears, click “Enable JavaScript” to add or remove the tick.

    Opera Quick Preferences menu

If you are using Mac OS X, then you need to select “Quick preferences” on the Opera menu, instead of the Tools menu.

Safari

  1. Open the Safari menu (OS X), or the “Edit” menu (Windows). (If the menu is not visible, press the Alt key.)
  2. Select “Preferences…”
  3. In the Preferences dialog box, click the Security icon (a padlock).

    Enabling JavaScript in Safari

  4. In the Web Content section, click the check box next to “Enable JavaScript” so that a tick appears. (Click again to remove the tick if you want to disable JavaScript.)
  5. Close the Preferences dialog box by clicking the red button at the top left (OS X) or by clicking the X icon at the top right (Windows).