I was wondering if there is a way to fix support for Windows Opera and Windows Safari using the circliful plugin?

Here is the plugin :  https://github.com/pguso/jquery-plugin-circliful

and here is a test :  http://jsfiddle.net/me2loveit2/H9gak/

I'm having a hard time debugging it and can't figure out the reason why it won't work on Opera and Safari since it does not show an error. If there was some way to catch an error I could make a fallback version for my site.

Thank you for your help in advance!