function showPopup(filename,width,height) {
	var zeit = new Date();
    var ms = zeit.getMilliseconds();
    var uniqueName = 'Imageviewer'+ms;
	var f=window.open(filename, uniqueName, 'width='+width+',height='+height+',scrollbars=no');	
}

function onlyOnce(id) {
	var obj = document.getElementById(id);
	
	if(id == 'freies_ticket') {
		var obj = document.getElementById(id);
		if(obj.checked) {
			var obj2 = document.getElementById('bitte_um_anruf');
			obj2.checked = false;
		}
	} else if(id == 'termin') {
		var obj2 = document.getElementById('bitte_um_anruf');
		obj2.checked = false;
	} else if(id == 'bitte_um_anruf') {
		var obj = document.getElementById(id);
		if(obj.checked) {
			var obj2 = document.getElementById('freies_ticket');
			obj2.checked = false;
			var obj3 = document.getElementById('termin');
			obj3.selectedIndex = 0;
		}
	}
	
}