var pop = null;
var radio1 = null;
var radio2 = null;

function popdown() {
  if (pop && !pop.closed) pop.close();
}

function popup(obj,w,h) {
  var url = (obj.getAttribute) ? obj.getAttribute('href') : obj.href;
  if (!url) return true;
  url = url + "&menu=0";
  w = (w) ? w += 20 : 150;  // 150px*150px is the default size
  h = (h) ? h += 25 : 150;
  var l = (screen.width/2) - (w/2);
  var t = (screen.height/2) - (h/2);
  var args = 'width='+w+',height='+h+',left='+l+',top='+t+',resizable,scrollbars=yes';
  popdown();
  pop = window.open(url,'',args);
  return (pop) ? false : true;
}

window.onunload = popdown;
window.onfocus = popdown;


function radioclicked(el) {
	if (!radio1) {
		radio1 = el.name;
	}
	if (radio1 && !radio2 && el.name != radio1)
	{
		radio2 = el.name;
	}
	if (radio1 && radio2)
	{
		if (el.name == radio1)
		{
			document.getElementsByName(radio1)[0].checked = true;
			document.getElementsByName(radio2)[0].checked = false;
		}
		if (el.name == radio2)
		{
			document.getElementsByName(radio2)[0].checked = true;
			document.getElementsByName(radio1)[0].checked = false;
		}
	}
	if (el.value == "Vorauskasse")
	{
		document.getElementById("zahlungsdaten").style.visibility = "hidden";
	}
	if (el.value == "Bankeinzug")
	{
		document.getElementById("zahlungsdaten").style.visibility = "visible";
	}
//	alert(el.name + radio1 + radio2);

	return true;
}