function trim(zeichenkette) {
	return zeichenkette.replace(/^\s+/, '').replace(/\s+$/, '');
}

function remove_default_value(obj) {
	if (obj) {
		obj.value = trim(obj.value);
		if (obj.value == obj.defaultValue) {
			obj.value = '';
		}
	}
}

function check_required_value(obj, err_msg) {
	if (obj) {
		obj.value = trim(obj.value);
		if (obj.value == obj.defaultValue || obj.value == '') {
			return "\n" + err_msg;
		} else {
			return '';
		}
	}
	return '';
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
	window.open(theURL,winName,features);
}