yes
Good movie. I liked the animation, altough the theme might be a bit out of place...
what King-Drake said is true. just double click on the button you made to open it. your time-frame should show 4 large frames. the last of these is the ''hit area'' of your button. this area will not be shown. but your mouse can ''hit'' it and thus pressing the button.
Others can prolly explain it much better then i just did. but i hope it helps. cheers!