function startadress(){
  var str = document.forms[0].str.value;
	var plz = document.forms[0].plz.value;
	var ort = document.forms[0].ort.value;
	
	var saddr = str + ', ' + plz + ', ' + ort;
	var link  = 'http://maps.google.de/maps?f=d&hl=de&daddr=Wuppertal%2C+Uellendahler%2BStr.+190&sll=51.75287%2C7.23918&sspn=0.018411%2C0.040169&ie=UTF8&source=embed&saddr=' + saddr;
  var seite = window.open(link,'', '');

  seite.focus();
  return false;
}