// WINDOWS

function openNewWin(loc,winName,tribs) {
  window.open(loc,winName,tribs);
}

function openWin(loc,winName,w,h) {
  links = (screen.availWidth/2) - (w/2);
  oben = (screen.availHeight/2) - (h/2);

  var tribs = "scrollbars=0,toolbars=0,location=0,directories=0,status=0,resizable=0,width=" + w + ",height=" + h + ", screenX=" + links +",screenY=" + oben + ",left=" + links + ",top=" + oben;
  newwin = window.open(loc,winName,tribs);
  newwin.focus();
}



// Newsletter - check Eingabefelder
function checkValues() {
      var errorMsg = "";
      if (!document.forms.newsletter_abo.EMAIL.value || document.forms.newsletter_abo.EMAIL.value == "") {
        errorMsg += "Bitte geben Sie Ihre Email-Adresse ein!\n";
      }
      if (document.forms.newsletter_abo.USERALTER.options[0].selected) {
        errorMsg += "Bitte geben Sie Ihr Alter an!\n";
      }
      
      if (errorMsg != "") {
        alert(errorMsg);
        return false;
      } else {
        document.forms.newsletter_abo.submit();
        return true;
      }
    }