function popupWindow(url,w,h,para) {
	if( arguments.length < 4 ) {
		para = 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=auto,resizable=yes,copyhistory=no' ;
	}
  	if (window.screen) {
    	var hori = screen.availWidth;
    	var verti = screen.availHeight;
  		win = window.open(url,'popupwindow','width='+w+' ,height='+h+', '+para+',left=' + ((hori - w - 10) * .5) + ',top=' + ((verti - h - 30) * .5));
	}
	win.focus();
}

var i=0;
function resize() {
  if (document.images[0]) window.resizeTo(document.images[0].width+10, document.images[0].height+90);
  self.focus();
}

function deleteForm() {
	document.indiTrainForm.user_eingabe.value = "";
}

function bestaetitgen() {
	if(document.itemQuantity.agb.checked == true) 	{
		location.href='/topnav/Warenkorb/Bestellen/?action=enterDeliveryAddress';
	} else {
		alert('Um zu bestellen, müssen Sie sich mit den Lieferbedingungen einverstanden erklären.');
	}
}