Onmousenotmove

1

Hello i’ve this code:

vierkantje.onMouseMove = function() {
    rondje.gotoAndPlay(2);
}

vierkantje and rondje are instance names of MC’s. The script do it good, if i move my mouse in vierkantje, the second frame of rondje comes. But, is there a function that says fi the mouse not move? Something like this:

vierkantje.onMouseNotMove = function(){
rondje.gotoAndPlay(2);
}

?