function RadioToText (feld, delimiter) {
	var wert='';
	for (var i = 0; i < feld.length; i++) {
		if (feld[i].checked) {
			if (wert!='') {
				wert += delimiter + feld[i].value;
			} else {
			 	wert = feld[i].value;
			}
		}
	}

	return(wert);
}
function isInteger ( input ) {
	var inputStr = input.toString();
	for (var i = 0; i< inputStr.length;i++) {
		var oneChar = inputStr.charAt(i);
		if (oneChar < "0" || oneChar > "9") {
			return false;
		}
	}
	return true;
}