Buttons
Transparent buttons
It is not necessary at all to add a visual content to the button. If you leave the content only in Hit frame it will be nothing on the stage, but the Hit area still will be clickable.
To illustrate it we created several buttons and added them to the layer above the image.
Explore the photo with the mouse and you will see the words appear when mouse enters certain areas.
For such button the Hit state is made a invisible rectangle (in the design environment it appears as blue semitransparent rectangle), Up frame is left empty and Over frame contains the text.
You may think about creating image maps with such buttons. The good idea is a map of the country with clickable cities.
Even though we don’t discuss the code, which will serve to create a real links, you may imaging how the functionality of Flash file may be extended with such buttons.