function calculate_income_and_expenses() {
	alert("OK");
	var grossScheduledIncome = 1;
	grossScheduleIncome = parseInt(document.loan_application.gross_scheduled_income.value);
	alert("OK");
	var otherIncome = document.loan_application.other_income.value;
	alert("OK");
	var grossIncome = grossScheduledIncome + otherIncome;
	alert("OK");
	document.loan_application.gross_income.value = grossIncome;
	alert("OK");
}