NAME
	InitMasks -- Initialize the BorderLine and CollMask masks of a VSprite.

   SYNOPSIS
	InitMasks(vs)
	          A0

	void InitMasks(struct VSprite *);

   FUNCTION
	Creates the appropriate BorderLine and CollMask masks of the VSprite.
	Correctly detects if the VSprite is actually a Bob definition, handles
	the image data accordingly.

   INPUTS
	vs = pointer to the VSprite structure

   RESULT

   BUGS

   SEE ALSO
	InitGels()  graphics/gels.h