How to Stop MC with Easing on mouse out?

Dear Mods & Friends…

I am moving 1 mc by onClipevnet (enterframe) while mouse is there on certain portion of the stage and i stop that moving of mc while mouse is not over tht certain portion of the stage or moves out of tht certain area. Bt i want to stop moving with ease not suddanly. I dont know how to do this…

Can ne plz look in to this…I am attaching my fla here

Thx in advance for your precious time.

Bhavik