Events manager plugin is very good plugin for events management in WordPress powered websites. I wanted to track event booking after successful payment. I used events manager pro plugin for payment. I googled out to add Google eCommerce Tracking Code for Events Manager Plugin but did not find any solution. After all of these, I reviewed plugin code made some tweaks to resolve this. The Patch is stated here to benefit all of you as follows:
ga and _gaq both are global object used for tracking in google analytics.
The _gaq global object can be used directly for asynchronous page tracking via the push(…) method.