Finding out how far though my animation is via script.

Hi, I am using Untity 4 and Mecanim to animate a non-humanoid generic object. I would like to find out at runtime, how far through a particular animation my Animator State machine is. if it is say 75% though "dance the Jig", I would like to set a parameter and possibly make a transition to another state.

Any thoughts as I am finding it really difficult to find tutorials / info on mecanim for non-human or generic animation.

Thanks