java script error

That simply means that your browser version and java version cannot perform the function that the site developer has created. This is not uncommon with java. Not all functions work with all browsers. If you are interested in seeing what functions do and do not work with the various browsers there's a site with all of the functions and browser capabilities here:

http://www.webdevelopersjournal.com/articles/javascript_limitations.html

If you know the specific java function you can check its compatibility with your current setup. If that function is not supported by your browser you will need to upgrade or change browsers if you want to utilize that particular site.

Cheers.

RW