Let's continue the zoom routine. Open the next to last frame zoom.
Normally we only have two commands: the calculation of the depth and the setting of the
zoomvalue. Before this we are going to add a new command:
Set Variable: "zoom" = zoom + zm
If (zoom> 100)
Set Variable: "zoom" = 100
End If
If (zoom <10)
Set Variable: "zoom" = 10
End If
First we add the zm value to the zoom, then we check that it doesn't exceed 100% or go under 10%
(under ten percent the object gets too small).
Last we set the buttons: double-click on your zoom-in button (any one of your eight buttons).
Then set these actions:
On (Roll Over)
Set Variable: "zm" = "5"
End On
On (Release, Roll Out)
Set Variable: "zm" = "0"
End On
I don't think this needs to be explained: while the mouse is over the button,
the zoom increases by 5 percent at every loop. Now set the same thing for the zoom-out button
but with "zm"="-5"