Flash attachMovie Problem

Borat_Sagdiyev

Hi there.

I want to implement a drop-down style menu which appears when the mouse hovers over a button.

Here's what I have so far:

on(rollOver){
_root.attachMovie("Symbol3", "Symbol31", 1);
}

"Symbol3" is a movie where another button appears.

Unfortunately, when I hover over the button, nothing happens. I have entered other functions in the above function to see of the event is triggered at all and they work correctly, so it does get called.

I have tried changing the layer number (the last function parameter above) so that its equal to the highest layer I have in my project but nothing happens there either. No errors are given saying that the movie couldn't be loaded or whatever. Am I missing some lines that actually play the movie?

Thanks in advance for the help,
Borat.