Follow the mouse, onrollover stop following :D

hi there,
i’m busy with something in flash… but i want to do the following thing.
i got a MC … this must follow the mouse so onrollout follow the mouse
and onrollover stop following the mouse. i tried this code:

 onClipEvent (enterFrame) { 
this.onRollOut = function () {
 mx=_root._xmouse;
 if (mx<_x) {
  dx=_x-mx;
 }
 else {
  dx=mx-_x;
 }
 moveSpeedx=dx/10;
 if (mx<_x) {
  _x=_x-moveSpeedx;
 }
 else {
  _x=_x+moveSpeedx;
 }
 my=_root._ymouse;
 if (my<_y) {
  dy=_y-my;
 }
 else {
  dy=my-_y;
 }
 moveSpeedy=dy/10;
 if (my<_y) {
  _y=_y-moveSpeedy;
 }
 else {
  _y=_y+moveSpeedy;
 }
 }
} 

:smiley: i hope someone can help me…
well cya later