ActionScript 2.0 :: Button OnPress Calls Another Button's OnPress?

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First, click on the Abaco island shape on the map. You'll see on rollOver there is a glow around the island. Now click on that island and the glow remains for the zoomed-in detailed view. When you return to map and zoom back out, the glow is removed.

Now, compare this with clicking on the island name "Abaco" from the list on the right, instead of clicking directly on the island from the map. It zooms in and shows the details fine, but the glow that should be there is not.

The reason this problem is very perplexing for me, is that the onPress action of the list button in the right column calls the onPress function of the map button. So, theoretically they should do the EXACT same thing when pushed. But clearly they don't.

Here is the code for the button from the list on the right panel:

Code:
listAbaco_mc.onRollOver = function() {
_root.map_mc.abaco_mc.button_btn.onRollOver();
};

[Code]....

There is more code, for example rollOver, rollOut, and Press actions for the other island buttons, but they are all of the exact same format as the Abaco island button and they all have the same problem.

So, to recap, the problem is that the list button in the right panel do not function properly onPress, even though they are calling the onPress function of the island buttons directly, and the island button onPress function works perfectly. Strangely, all but one little thing works. So it's obviously getting to the correct functions and going through the code as planned, yet that one part about the glow is being ignored or otherwise messed up.