function chkFormular () {
  if (document.Formular.name.value == "") {
    alert("Please add your first name!");
	document.Formular.name.className = 'fehler';
    document.Formular.name.focus();
    return false;
  }
   if (document.Formular.vorname.value == "") {
    alert("Please add your First Name!");
	document.Formular.vorname.className = 'fehler';
    document.Formular.vorname.focus();
    return false;
  }
    if (document.Formular.phone.value == "") {
    alert("Please add your Phone Number!");
	document.Formular.phone.className = 'fehler';
    document.Formular.phone.focus();
    return false;
  }
 if (document.Formular.ort.value == "") {
    alert("Please add your city!");
	document.Formular.ort.className = 'fehler';
    document.Formular.ort.focus();
    return false;
  }
  if (document.Formular.email.value == "") {
    alert("Please add your E-Mail-Adress!");
	document.Formular.email.className = 'fehler';
    document.Formular.email.focus();
    return false;
  }
  if (document.Formular.email.value.indexOf("@") == -1) {
    alert("This is not an E-Mail Adress!");
	document.Formular.email.className = 'fehler schwererfehler';
	document.Formular.email.style.color = '#ff0000';
    document.Formular.email.focus();
    return false;
  }
}