Get instance of XSLTProcessor in webworker?
===

I've been successfully transforming XML document with XSLT, I'm initiating the process from JavaScript. Since the XML input is fairly large, my plan was to start the XSLT transformation within a webworker. 

The error I get at this line 
    `var processor = new XSLTProcessor();`
is
     
    `Chrome--> Uncaught ReferenceError: XSLTProcessor is not defined 
    'Firefox--> XSLTProcessor is not defined`
As I mentioned it previously worked. 
Does anyone has a suggestion how to get an instance of a XSLTProcessor, within a webworker? I know webworkers
are very limited in what they can access.

Thank you !!