ActionScript for Flash MX: The Definitive Guide, 2nd Edition By Colin Moock
Chapter 18. ActionScript Language Reference
Button._height Property
Flash 6
height of the button, in pixels
read/write
theButton._height
Description
The floating-point _height property is a nonnegative number specifying the height of theButton's current frame (Up, Over, Down), in pixels. It can be both retrieved and set (the latter action changes the button's size on screen). In all other respects, it behaves identically to MovieClip._height; see that property entry under the MovieClip class for details.