Adding Buttons To Doc Form

I want to add a button to the document form in the manager side, in Evo I created a plugin for that but I can imagine that Rev has an option to add one with out a plugin?

I created a plugin for Evo that allowed you to push a blog article from the manager to Facebook with a simple click, it took the pagetitle, url alias, introtext and auto posted on the FB wall. I want to see if I can move this to Rev now but how do you create buttons similar to the `save` button other than using a plugin? I don’t mind creating a plugin for it but if there’s another way... also I need to include Javascript as I used ajax to validate the details, log in the database it had been sent and actually post it to Facebook.

Cheers!

I’m interested in this question, too. See my related post here: http://modxcms.com/forums/index.php/topic,59254.0.html