This function is
EXPERIMENTAL. The behaviour of this function, its name, and
surrounding documentation may change without notice in a future release of PHP.
This function should be used at your own risk.
Adds the given action
to the button for the given
conditions.
The following flags
are valid:
SWFBUTTON_MOUSEOVER,
SWFBUTTON_MOUSEOUT,
SWFBUTTON_MOUSEUP,
SWFBUTTON_MOUSEUPOUTSIDE,
SWFBUTTON_MOUSEDOWN,
SWFBUTTON_DRAGOUT and
SWFBUTTON_DRAGOVER.