If you put a surge protector on your electrical outlet, but not on your modem line, you're still exposed to power surges. When I'm on the Internet, I often get JavaScript errors. A Most likely, the problem is the fault of the Web site's programmer, which means there's not a whole lot you can do about it. If you are getting the error message on every single site you access, either switch to a different browser or reinstall the one you have to fix it. If you only get errors on a few of the sites you visit, then it's probably safe to say that the problem is the site.
Errors often turn up because of the limited compatibility of different platforms.
A Web site designed on a Mac needs to be double-checked against different platforms to ensure that it works across the boards. He also helps to run Twin State Technical Services, a technology consulting company.