How To Enable JavaScript In Your Browser


If you have any problems with the following instructions, please contact your local systems administrator for assistance.


Internet Explorer 6 and 7
  • Select Tools | Internet Options… menu item from the main menu.
  • Change to the Security tab at the top of the Internet Options window that pops up.
  • From the list of zones at the top of the Security options select the internet icon.
  • Select the button near the bottom that reads Custom Level.
  • In the new window that pops up, scroll down to the item that reads Active Scripting.
  • Select the option marked Enable.


Mozilla Firefox 1.5 and 2.0
  • Select Tools | Options... from the main menu.
  • Select Content button from the top row of options.
  • Select "Enable JavaScript." (You do not need to enable Java, but it is OK if you do.)
  • Note: You may wish to install the NoScript extension for Firefox to control which sites can run JavaScript.


  • Select Preferences from the Safari menu.
  • Select Security tab at the top.
  • Make sure "Enable JavaScript" is checked.


Opera 8 and 9
  • Select Tools | Quick Preferences ... from the main menu.
  • Make sure "Enable JavaScript" is checked.


Opera 6 and 7
  • Select File | Preferences... from the main menu.
  • Click Multimedia.
  • Under the "JavaScript" heading, select "Enable JavaScript."


  • Select Configure Konqueror from the Settings menu.
  • Make sure "Enable JavaScript globally" is checked under the Java & Javascript tab.


Netscape 6.x and 7.x (Mozilla 1.0)
  • Select Edit | Preferences… menu item from the main menu.
  • Click on the Advanced label displayed in the list of options on the left hand side of the Preferences window that pops up.
  • On the right hand side select the checkbox marked Enable Javascript for Navigator.

Wellcome Trust Genome Campus, Hinxton, Cambridge, CB10 1SA, UK  Tel:+44 (0)1223 834244