function openWindow (url, title, width, height) {
 newWindow = window.open(url, title, "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=yes,width="+width+",height="+height+",left=100,top=200");
 newWindow.focus();
}

function chkFormular(L) {
   if (document.form2.email.value == "") {
    if (L=="0") alert("Bitte Empfänger-Email eingeben!");
    else alert("Please enter Email of recipient!");
    document.form2.email.focus();
    return false;
  }
  if (document.form2.mail_from.value == "") {
    if (L=="0") alert("Bitte den Absender (Name oder Email) eingeben!");
    else alert("Please enter sender (name or email)!");
    document.form2.mail_from.focus();
    return false;
  }
  if (document.form2.mail_title.value == "") {
    if (L=="0") alert("Bitte einen Betreff eingeben!");
    else alert("Please enter subject!");
    document.form2.mail_title.focus();
    return false;
  }
  if ((document.form2.email.value.indexOf("@") == -1) || (document.form2.email.value.indexOf(".") == -1)) {
    if (L=="0") alert("Keine gültige E-Mail-Adresse!");
    else alert("No valid email-address!");
    document.form2.email.focus();
    return false;
  }
}

function showmore(id) {
 document.getElementById(id+"nav10").className= "navshow";
 document.getElementById(id+"more").className= "navhide";
}