function calcLength () {
	var returnValue; returnValue = 0;
	if (document.calcLengthForm.calcLengthConversion.selectedIndex == 0) {
		returnValue = document.calcLengthForm.inputLength.value * 0.305;
	}
	else if (document.calcLengthForm.calcLengthConversion.selectedIndex == 1) {
		returnValue = document.calcLengthForm.inputLength.value * 3.281;
	}
	else if (document.calcLengthForm.calcLengthConversion.selectedIndex == 2) {
		returnValue = document.calcLengthForm.inputLength.value * 25.4;
	}
	else if (document.calcLengthForm.calcLengthConversion.selectedIndex == 3) {
		returnValue = document.calcLengthForm.inputLength.value * 0.039;
	}

	document.calcLengthForm.resultLength.value = returnValue
	return true;
}

function calcVolume () {
	var returnValue; returnValue = 0;
	if (document.calcVolumeForm.calcVolumeConversion.selectedIndex == 1) {
		returnValue = document.calcVolumeForm.inputVolume.value * 4.546;
	}
	else if (document.calcVolumeForm.calcVolumeConversion.selectedIndex == 0) {
		returnValue = document.calcVolumeForm.inputVolume.value * 0.22;
	}

	document.calcVolumeForm.resultVolume.value = returnValue
	return true;
}

function calcPressure () {
	var returnValue; returnValue = 0;
	if (document.calcPressureForm.calcPressureConversion.selectedIndex == 0) {
		returnValue = document.calcPressureForm.inputPressure.value * 0.069;
	}
	else if (document.calcPressureForm.calcPressureConversion.selectedIndex == 1) {
		returnValue = document.calcPressureForm.inputPressure.value * 14.504;
	}

	document.calcPressureForm.resultPressure.value = returnValue
	return true;
}

function calcTemperature () {
	var returnValue; returnValue = 0;
	if (document.calcTemperatureForm.calcTemperatureConversion.selectedIndex == 0) {
		returnValue = (document.calcTemperatureForm.inputTemperature.value - 32) * 0.555;
	}
	else if (document.calcTemperatureForm.calcTemperatureConversion.selectedIndex == 1) {
		returnValue = (document.calcTemperatureForm.inputTemperature.value * 1.8) + 32;
	}

	document.calcTemperatureForm.resultTemperature.value = returnValue
	return true;
}