function getConversionFactor(field){
	var umrechnungswerte = new Array();
	umrechnungswerte['rated_power_value'] = 4900;
	umrechnungswerte['rotor_diameter'] = 135;
	umrechnungswerte['tower_hub_height'] = 160;
	return umrechnungswerte[field];
}

function getBaseValue(field){
	var baseValues = new Array();
	baseValues['rated_power_value'] = 100;
	baseValues['rotor_diameter'] = 15;
	baseValues['tower_hub_height'] = 40;
	return baseValues[field];
}