function trim(s) {
	if (s == "")
		return false;
	return s.replace(/^\s+|\s+$/g,"");
}
function isAlphaNumeric(s) {
	if (s == "")
		return false;
	var r = /^[A-Za-z0-9äöüÄÖÜß\_\%\&\#\-\+\=\,\.\:\;\?\!\[\]\{\}\(\)\/\ ]*\s*$/;
	return (r.test(s));
}
function isEmail(s) {
	if (s == "")
		return false;
	var r = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
	return (r.test(s));
}
function isDatum(s) {
	if (s == "")
		return false;
	var r = /^(0?[1-9]|[12][0-9]|3[01])\.(0?[1-9]|1[0-2])\.([1-2]\d\d\d)$/;
	return (r.test(s));
}
function isName(s) {
	if (s == "")
		return false;
	return (s.search(/^[a-zA-ZäöüÄÖÜß´\s|\-]*$/) != -1);
}
function isNumer(s) {
	if (s == "")
		return false;
	var r = /^\d{1,16}$/;
	return (r.test(s));
}
function isPasswort(s) {
	var w = trim(s);
	if (w == "")
		return false;
	var r = /^[A-Za-z0-9\_\-]*$/;
	return (r.test(w));
}
function isPlz(s) {
	if (s == "")
		return false;
	var r = /^\d{1,5}$/;
	return (r.test(s));
}
function isTelefon(s) {
	if (s == "")
		return false;
	var r = /^-?\d{1,25}$/;
	return (r.test(s));
}
function isUhrzeit(s) {
	if (s == "")
		return false;
	var r = /^([01][0-9]|2[0-3]):([0-5][0-9])$/;
	return (r.test(s));
}