function setVehicle(arg) {
	showLoading();
	var vehicleType = document.getElementById('vehicleType');
	var manf = document.getElementById('manufacturer');
	var range = document.getElementById('range');
	var model = document.getElementById('model');

	switch(arg) {
		case "manf": {
			window.location = 'offers.php?vehicleType=' + vehicleType.value + '&manf=' + manf.value;
			break;
		}
		case "range": {
			window.location = 'offers.php?vehicleType=' + vehicleType.value + '&manf=' + manf.value + '&range=' + range.value;
			break;
		}
		case "model": {
			window.location = 'offers.php?vehicleType=' + vehicleType.value + '&manf=' + manf.value + '&range=' + range.value + '&model=' + model.value;
			break;
		}
		default: {
			break;
		}
	}
}

function showLoading() {
	var s = document.getElementById('submit');
	s.disabled = true;
	var l = document.getElementById('loading');
	l.style.visibility = "visible";
}

function hideLoading() {
	var s = document.getElementById('submit');
	s.disabled = false;
	var l = document.getElementById('loading');
	l.style.visibility = "hidden";
}