Creating a Standard Button

Question

I'm creating a basic navigation bar for my site and I want to create a common set of buttons that will be used to link to different sections on the site.
I have no problem creating a rectangle with text, converting it to a symbol (button), and then duplicating it to create multiple, identical buttons.
However, I don't understand how to change all of the buttons at once after they've been placed on the stage. For example, say I have 2 buttons and decide I want to change the font size for both buttons at once:
Is there an easy way to this?

Answer 1

When you create buttons using movieclips, you have to also create the code that controls them.  So you have frames for the different states, just like you would for a button, and you create the code that works with them for those states.
When you rollover the movieclip you will have a frame for the rollover state and code that commands the movieclip to go to that frame,  The same for any other state you wanted to include.
If you manually edit one of the movieclip's textfields, you will be editing all of the instances.  The key again is that you use code to assign the text so that all of the instances will have different text labels when you run the file.
There are some people who will not use anything but movieclips as buttons, and have classes they create to make it an easy dealing.  If you were to post a question about it, you might get some useful information of how to approach it from a regimented approach.