Works

but i want to understand what it do exactly

PHP Code:
var myClip:MovieClip = e.currentTarget.parent as MovieClip; 
my MovieClip is the entire "termini" movieclip, right?

but myClip.parent.parent.root i don't understand at what refers to
and in any case, if i want to climb up until the root, isn't more correct write "(root as MovieClip).getChildByName("..... " ) ?