function surfL(form) {
          var myindex=form.marke.selectedIndex
          if (form.marke.options[myindex].value != "0") {
           location=form.marke.options[myindex].value;}
  }
function oeffnefenster (url) {
        fenster = window.open(url, "Bild", "width=600,toolbar=no,location=no,directories=no,status=yes,scrollbars=yes,resizable=yes,copyhistory=no");
        fenster.focus();
    }
function box(text) {
	return confirm(text);
}
function surf1(form) {
	var myindex=form.hersteller.selectedIndex
	if (form.hersteller.options[myindex].value != "0") {
		location=form.hersteller.options[myindex].value;}
}
function surf2(form) {
	var myindex=form.typ.selectedIndex
	if (form.typ.options[myindex].value != "0") {
		location=form.typ.options[myindex].value;}
}