void script_75() {
	int ivar0;
	string svar0;
	ivar0 = globalint_3;
	svar0 = "null";
	if (ivar0 == -1) {
		ivar0 = globalint_4;
	}
	if (globalint_3 != globalint_4) {
		ivar0 = subtract(ivar0, 1);
		if (ivar0 < 0) {
			ivar0 = 19;
		}
		svar0 = script_79(ivar0);
		if (strLength(svar0) > 0) {
			globalstring_1 = svar0;
			globalint_3 = ivar0;
		}
	}
	return;
}