Overlay of seperate flash movies

Hi everybody,

Have this dilemma involving 2 seperate .SWF files.

1st .swf file contains a drop down menu and the height of it is 800px and the ‘effective’ height is about 200px.

2nd .swf file contains clickable buttons and on the site it would be placed just under the drop down menu above.

Now… for both .swf files i have set a z-index and wmode: transparent.
When i publish the html, the drop down menu will open over the 2nd swf file.
But i cannot seem to click on the buttons anymore on the 2nd swf file.

how do i get this to work ?

thanks in advance