Onclick Event Tracking for "Submit" Without Editing Plugin Code

I've been reading up on how to add onclick event tracking to the "submit" button on gravity forms, but most of the answers require me to write the tracking code into the actual code for the plugin. I don't want to get that technical and won't it be removed every time I update Gravity Forms? So what I want to know is if there is a way to just enter the onclick event tracking code for Google Analytics in the Form Editor?

We have a similar requirement, but one that the functions.php solution does not cater for.
We have created multiple forms, and continue to create and archive forms on a continual basis (we use it for quick competition entry mechanisms and other on-the-fly usage).
Our requirement is to have tracking on each form and not just a single one - the solution above only allows you to track conversions for a single form, and if you want to track other forms you'd need to change the form ID's.
A simple solution for me would be to add tracking to the submit button that is something like this:
_gaq.push(['_trackEvent', 'Forms', 'Submission', '<form name variable']);

This then gets added to EVERY single submit button on every single form. The variable would allow you to track the different forms.

I would imagine that a simple checkbox in the admin panel that says "track submissions" would let you pick if you want to track submissions on that form or not.

Easier speculated than done, but this would be a fantastic feature or add-on.

I think it would - which variable/function would I use to echo out the form title? Assuming it would replace the 'GA Testing Form FINAL' in the ga.push below (line 10 in the paste)?

_gaq.push(['_trackEvent', 'Forms', 'Submission', 'GA Testing Form FINAL']);

Thanks a lot - I've managed to paste it in and it looks like this now: http://pastie.org/4551792
I had some syntax errors initially, but it seems to be working OK now. I haven't been able to test it fully with Analytics (Will try debugging just now), but will have a look tomorrow. The demo form I have is up here: http://10and5.com/demo-forms/.

Thanks for your help!

Hi Chris - just to say that the solution worked perfectly. Everything seems to be running like a charm. I've setup goals in Analytics with the various form names I required so these should be pulling through from now on.
I've updated the tabbing on the sidebar form as well - I didn't realize there was an error there.

Thanks for your help!