If you cannot open websites from IE8 and happen to be the owner of that website, it could be quite frustrating. However, there are certain simple ways through which you can get rid of this problem. This occurs if the computer is not able to understand the JavaScript code in the website that you are trying to open.
Try the following actions:
1. Removing all the codes of Google AdSense, FeedBurner and other similar applications.
2. Add the codes back one by one to try to determine when the error message pops up. Any specific code would be the one causing the problem.
3. Try removing or replacing that particular piece of code snippet.
If you have Google Maps API, you may face such problems with opening a few sites.