tool for stripping JavaScript out of PDF's

A while back were were discussing how JavaScript embedded in PDF  
files pose a security risk.
http://www.webappsec.org/lists/websecurity/archive/2005-06/msg00130.html

One of the recommended solutions was to turn off JavaScript in the  
PDF reader. But this doesn't help when we want to sanitize PDF's for  
redistribution. Does anyone know of tools that will strip JavaScript  
out of a PDF file?

If there isn't one, perhaps someone might want to take up the cause  
and write one. :)



Regards,

Jeremiah-