Having a problem with a rollover state, please help

programming flash
1

Please check out the attached .fla file of a simple sliding open button I made. Its made in an actual movieclip symbol not a button.

Im having issues with the rollover animation. It works just fine when u rollover slowly but when u run the mouse over it fast it just gets stuck in the overstate.
Ive never seen or encounted this problem before.

Can anyone help?

Heres the code I have on the timeline

stop();
infoDown_btn.onRollOver = function() {
this.gotoAndPlay(“over”);
};
infoDown_btn.onRollOut = function() {
this.gotoAndPlay(“out”);
};
infoDown_btn.onPress = function() {
gotoAndPlay(“open”);
};