The actual code for that haxxly doesn't do anything (well - it attempts to load jquery and sets the font tag to arial). Check out http://www.haxx.ly/h/28 for a quick example.

The 406 is the view counter just reporting you've viewed the page. The script error was an error on that particular haxxly.

Out of curiosity, why do you use 406 for your view counter?

It's [406] "not acceptable" to register more than one view per haxx!