The button symbol is equiped with the ability to change
it's appearance according to what state the button it. Theree
exists four states, Up, Over, Down and Hit. You can see
buttons in their normal state which is the Up state. You can
then interact with it by rolling your mouse 'over' the button.
When you click on the button, it's state will be 'down' as
long as the mouse remains pressed. A button can also have an
assigned action when a certain state is reached, because of
this, there are four frames to define each state of your
button.
States of the button:
1. Up is the state used whenever the mouse pointer is not over
the button.
2. Over is used when the mouse pointer is over the button.
3. Down is the state attained when the button is clicked.
4. Hit is invisible and defines the area where the button will
react to the mouse pointer.
Creating Buttons:
To create a button, you need to first have a symbol. On your
menu, go to "Insert" and choose "New Symbols" or hit CTRL+F8
on your keyboard. The "symbols Properties" window will open,
choose button, and call it button 1. Click OK.
(As shown in figure 2.9)

(Figure 2.9)
You will be taken to a new stage, called button 1. In this
stage, you will notice four frames. Frame 1, "UP" is the main
frame. This will be the button, when nothing is being done to
it by the user. Frame 2, "Over" is the 2nd part of the button.
When the user's mouse is on your button, Frame 2 will appear,
and frame 1 will disappear. Frame 3, "Down" is the part of the
button that is clicked on. When a user clicks on the button,
they will see the image on Frame 3. Finally frame 4, "Hit" is
the frame that lets you decide where you want the button to be
activated. Example, if you have a square button, and the "Hit"
frame is a circle shape, when you are viewing your movie with
the button in it, only a circle around the square will be
considered by Flash the button.
(Frames shown in figure 3.0)

(Figure 3.0)
In frame 1, draw a rectangle shape, and then
add some text to it. The drawing you just added to frame 1 is
now what users will see. Now, click on frame 2, and hit F6 on
your keyboard, this will add a new keyframe, and you will
notice your button from frame 1 is copied over. You can either
leave it as is, but that's not exciting or change it's look.
Give the text a bold look, and change the color of your
square. When users put their mouse over the button, they will
now see what's on frame 2. Select frame 3, and hit F6 once
again. You do not have to do this if you do not want to. Frame
3 is only viewed if the user clicks on your button, but then
again, it's up to you. The image from frame 2 is now copied
onto frame 3, you can modify it the way you want it to look.
Select frame 4, and hit F6 again. In frame 4, you do not have
to change anything, because no matter what, no one will ever
see what's on frame 4. You now have a new button, return to
the stage,
and from
the library, slide you new button onto it. Now you may want to
add some actions to your button, read the following for more
details on how to do so.
Adding Actions:
You have created a button, you may want to assign an action to
it now. This could server useful if this button will be used
on a web site, you can redirect users to another web page with
it. From your stage, right-click on your button, and select
"Action". You are now in the Action Panel. From the Basic
Actions button, select the getURL command. Now type in a URL
of your choice, and close the Action Panel.
(As shown in Figure 3.1)

(Figure 3.1)
Your button has now a link assigned to it. If
you want to test it out, go to "Control> Enable Simple
Buttons" or press CTRL+ALT+B and you can now click on your
button.
Save your movie as button 1.fla and
continue to the Sound section, you will need your button for
this next section.