If Java is disabled then:
From Internet Explorer, click on tools menu, select Internet Options, then click on the Security Tab. Click on Custom Level and scroll down the list and enable Scripting of Java Applets (it's almost at the bottom) If that does not do the trick selectively enable some of the others in the list that look likely suspects until you get the page to work.
If you need to Download Java itself, go to this site and get it from there. click here