/* Bildwechsel */

function showPic (whichpic,number) {
 if (document.getElementById) {
  document.getElementById('placeholder'+number).src = whichpic.href;
  return false;
 }
else
{
	return true;
}
	
}



/* Kontaktformular Formulareingaben überprüfen */

function chkFormular () {
  if (document.Formular.Name.value == "") {
    alert("Please enter your name.");
    document.Formular.Name.focus();
    return false;
  }
  if (document.Formular.EmailFrom.value == "") {
    alert("Please enter an valid email address.");
    document.Formular.EmailFrom.focus();
    return false;
  }
  if (document.Formular.EmailFrom.value.indexOf("@") == -1) {
    alert("Please enter an valid email address.");
    document.Formular.EmailFrom.focus();
    return false;
  }
  if (document.Formular.Tel.value == "") {
    alert("Please enter your phone number.");
    document.Formular.Tel.focus();
    return false;
  }
}