This is the 3rd part of this Flash tutorial. Next, create a key frame (f6) at frame 30 of the mask layer. This frame will be the start of where the mask shrinks, revealing another image below.
Step 14.
And thena another one at frame 60
Step 15.
While the 2nd key frame is still selected, change the x&y position of the mask to 160 and the size of it to 1x1 pixel. The mask should now be tiny and in the center.
Step 16.
Right click on a frame, of the mask layer, inbetween the 2 key frames and choose "create Motion Tween".
Step 17.
Playing the Flash movie now should show the viewable area of the image shrink in size.
