Without looking at your computer, I can't say for certain what is going on but it does appear to be a Javascript error. TriumphRat.Net does use Javascript.
The error you are getting is your browser telling you that it can't make sense of the Javascript. One way to find out is to use an alternative browser and see if it shows the same error.
If it does, then check your internet security settings and make sure there aren't any firewall rules that would block content from TriumphRat.Net.
If it doesn't, you might try the previously-mentioned FAQ. If your computer is a Windows PC:
http://www.triumphrat.net/site-happe...ce-issues.html
Hope this helps,