function chImgIn(tId) {
	document.getElementById(tId).src = "http://xn--schnschrg-22a6q.de/wp-content/themes/schoenschraeg/img/gen/nav/" + tId + "_on.jpg";
}

function chImgOut(tId) {
	document.getElementById(tId).src = "http://xn--schnschrg-22a6q.de/wp-content/themes/schoenschraeg/img/gen/nav/" + tId + "_off.jpg";
}