function onCheckBoxClick() {
	checkBox 			= document.getElementById("checkbox_abbonent");
	payment_bank 		= document.getElementById("payment_bank");
	payment_rechnung 	= document.getElementById("payment_rechnung");
	
	if (checkBox.checked) {
		payment_bank.disabled = false;
		payment_rechnung.disabled = false;
	} else {
		payment_bank.disabled = true;
		payment_rechnung.disabled = false;
		payment_bank.checked = false;
		payment_rechnung.checked = true;
	}
}

function openwin(){
  if(PopUp = window.open("widerruf.html", "Popup", "width=550,height=350, left=100, top=100")){
    PopUp.focus();
  }else{
    alert("Ein Popup wurde geblockt");
  }
}

function calculatePrice() {
	
	_menge	= document.getElementById('input_menge');
	_price	= document.getElementById('price');
	_price_h = document.getElementById('hidden_price');
	_csumme = document.getElementById('summe');
	_csumme_h = document.getElementById('hidden_summe');
	_abonennt = document.getElementById('checkbox_abbonent');
	_preis 	= parseFloat(_menge.value) * 14.95;
	_menge_v = parseFloat(_menge.value);
	_summe = _preis;
    checkBox = document.getElementById("checkbox_abbonent");
	
if (_menge_v < 2 )    {
        if (checkBox.checked)   {
            _csumme.innerHTML = "Hallo";
        }
        if (!(checkBox.checked))  {
            _summe += 2.5;            
        }
    }

	if (isNaN(_preis)) {
		_price.innerHTML = "ung&uuml;ltige Menge";
		_csumme.innerHTML = "ung&uuml;ltige Menge";
	}
	else {
		_price.innerHTML = _preis.toFixed(2) + " Euro";
		_price_h.value = _preis.toFixed(2) + " Euro";
		_csumme.innerHTML = _summe.toFixed(2) + " Euro (inkl. Versand)";
		_csumme_h.value = _summe.toFixed(2) + " Euro (inkl. Versand)";
	}
}


function hoverSendButton() {
	submit_button = document.getElementById("submit_button");
	submit_button.src = "images/send_active.png";
}

function unhoverSendButton() {
	submit_button = document.getElementById("submit_button");
	submit_button.src = "images/send_inactive.png";
}

function clearDateField() {
	birthField = document.getElementById("field_gebdat");
	if(birthField.value == "TT.MM.JJJJ")
		birthField.value = "";
}

function setDateField() {
	birthField = document.getElementById("field_gebdat");
	if(birthField.value == "")
		birthField = "TT.MM.JJJJ";
}

function onSubmit() {
	parent.location.hash = '#';
	return true;
}