1.  Click 'Tools and then 'Internet Options' 

2.  Select the Security tab, and select the 'Custom Level' button 

3.  Scroll down to the bottom to find 'Scripting of Java applets' 

4.  Make sure the 'Enable' radio button is checked 

5.  Click 'OK' to save your preference

6.  If the Enable button was not checked, you will need to reboot your computer before JavaScript will be enabled.