This plugin will allows you to use 3rd party extensions and systems that are using both jQuery 1.6 and jQuery 1.9 extensions. Please enable Virtuemart jQuery library, which will be automatically overrided by this plugin and will automatically use the jQuery backward compatibility javascripts.
License GPLv3
This plugin solves the main issue when using jQuery 1.9 with Virtuemart 2.0.x:
Uncaught TypeError: Object [object Object] has no method 'on'