SWFInput_readSBits(SWFInput input, int number)
{
	int num = SWFInput_readBits(input, number);

	if(number && num & (1<<(number-1)))
		return num - (1<<number);
	else
		return num;
}
SWFInput_readSBits(SWFInput input, int number)
{
	int num = SWFInput_readBits(input, number);

	if(number && num & (1<<(number-1)))
		return num - (1<<number);
	else
		return num;
}