Yes, I was referring to the Jave Runtime Environment, JRE. I'm not certain at all if that's the root of the problem.
This guy seems to have the same problem.
Javascript Myself To Death: The Web Is One Big Runtime Error!
After browsing the web a little, it seems like these IE 7 javascript syntax errors are occuring for some other people as well.
I've got Google Toolbar and Roboform installed, the NET framework 2.0, JRE, Sygate Firewall, and Norton Antivirus Corporate 9.0.0.338 installed on Windows XP.