Simply play an animation with the animator via javascript...?

Hi everyone

I've never used the Animator component and always used legacy animations which I could play in Javascript with a simple:

GetComponent.<Animation>().CrossFade("walk",0.4); (for example)

Now since I'm using different mocap solutions, I went with the animator and use a humanoid model. How would I access and play a simple animation like "walk" by script in Javascript, similar to above? Just have it blend into a new animation by script.

Watched some of the tutorials, but couldn't find anything... Help would be much appreciated.