ShortTimeSubtraction Operator

public static TimeSpan operator -(
	ShortTime a,
	ShortTime b
)

Public Shared Operator - ( 
	a As ShortTime,
	b As ShortTime
) As TimeSpan

public:
static TimeSpan operator -(
	ShortTime a, 
	ShortTime b
)

static let inline (-)
        a : ShortTime * 
        b : ShortTime  : TimeSpan

JavaScript does not support overloaded operators.