// JavaScript Document
function pruefen () {
  if (document.Formular.forename.value == "") {
    alert("Please type your forename!");
    document.Formular.forename.focus();
    return false;
  }
  
   if (document.Formular.name.value == "") {
    alert("Please type your name!");
    document.Formular.name.focus();
    return false;
  }
  
  if (document.Formular.email.value.indexOf("@") == -1 ||
	  document.Formular.email.value.indexOf(".") == -1) 
  {
    alert("No e-mail without @ or .!");
    document.Formular.email.focus();
    return false;
  }
  
 // if (document.Formular.email.value == "") {
//    alert("Bitte Ihre E-Mail-Adresse eingeben!");
//    document.Formular.email.focus();
//    return false;
//  }
//  if (document.Formular.email.value.indexOf("@") == -1) {
//    alert("Ohne @ Zeichen gibt es keine E-Mail!");
//    document.Formular.email.focus();
//    return false;
//  }
   
 if (document.Formular.state.value == "") {
    alert("Please name your state!");
    document.Formular.state.focus();
    return false;
  }
  
   if (document.Formular.town.value == "") {
    alert("Please name your town!");
    document.Formular.town.focus();
    return false;
  }
  
   if (document.Formular.form_eingabe_text.value == "") {
    alert("Please write your message!");
    document.Formular.form_eingabe_text.focus();
    return false;
  }
  
  if (document.Formular.street.value == "") {
    alert("Please name your street!");
    document.Formular.street.focus();
    return false;
  }
  
  var chkZ = 1;
  for (i = 0; i < document.Formular.Alter.value.length; ++i)
    if (document.Formular.Alter.value.charAt(i) < "0" ||
        document.Formular.Alter.value.charAt(i) > "9")
      chkZ = -1;
  if (chkZ == -1) {
    alert("Altersangabe keine Zahl!");
    document.Formular.Alter.focus();
    return false;
  }
}