Drag + button issues

Hello.
Why is it that when i have button in a movie clip and that movie clip is a draggable object the button becomes inactive? How can i have both the button and the movie clip draggable and the button continue to function.

below is the script i have for the draggable movie clip, which has the button contained within that:


on (press) {
startDrag(_root.dragObject);
}
on (release) {
stopDrag();
}

attached is my file