Microsoft Internet Explorer users:
Internet Explorer restricts active content from being displayed.
As a result the above login fields will not work until you allow active content to be run.
 - Click the 'information bar' towards the top of your screen
 - Select ALLOW BLOCKED CONTENT...
 - Select YES from the Security Warning dialog box

To avoid this problem again, try using Firefox web browser as an alternative to Microsoft Internet Explorer     Browse the Web with confidence - Firefox protects you from viruses, spyware and pop-ups.