BUILDIN(rand)
{
	int range;
	int min;
	int max;
	
	if( script_hasdata(st,3) )
	{// min,max
		min = script_getnum(st,2);
		max = script_getnum(st,3);
		if( max < min )
			swap(min, max);
		range = max - min + 1;
	}
	else
	{// range
		min = 0;
		range = script_getnum(st,2);
	}
	if( range <= 1 )
		script_pushint(st, min);
	else
		script_pushint(st, rnd()%range + min);
	
	return true;
}