Help! I'm really new to Flash and have just finished a course but was confused with the session on movie clips and buttons. I've been struggling through a navbar but have reached the point of frustration that I need help!

Here is what I'm attempting to do:

The menu at this link http://www.tombo.ca/tccmenu.fla uses text navigation for each webpage. In the initial navigation, I am trying to create the effect of the text button "swelling" on the rollover state (I have created a movie clip for each text button simulating this) and then beeping on the down state. The swelling and beeping works but it is temperamental. I have already created behaviour links to go to a web page for each text link. These all work.

Also, the button titled "equipment" has a dropdown menu which is where I really get mixed up. I created the dropdown menu as a movie clip where each item cascades below the other and, when each item is rolled over, it flashes and then a beep occurs on click. I can get this to work on its own but this is where I get extremely confused:

1) I would like the initial menu to not be so glitchy. I've done something wrong and I'm suspecting it has to do with the actionscript.
2) I cannot, for the life of me, figure out how to get the dropdown menu to work within the main timeline. It is supposed to drop below "equipment" but there is already an action for the equipment button to go to "equipment.html". How do I also get the equipment submenu to drop below the equipment button on rollover...and work?

I hope I haven't created a mess. Thanks to anyone who can guide me!