UP: The button image when the mouse it NOT over the button
OVER: The button image when mouse is OVER the button
DOWN: The button image when the button is CLICKED
HIT: The AREA of the stage that reacts
Go to Actions Panel which will have the heading : Actions - Button
Go to Actions > Browser / Network > get URL
This screen will open up:
Type in the internet website address if you want the button to open
up a website
Type in the document path if you want the button to open up a document
from you computer.