function closewin(name) {
   var div = document.getElementById(name);
   div.style.display="none";
  }
  
  function openwin(name) {
   var div = document.getElementById(name);
   div.style.display="inline";
  }
  
function checkContact(txt, cname, email, email2) {
  var ddata = document.contact, err = "";
/*
  if (ddata.aj5a.value == "") {
    err += ' - ' + cname + '\n';
  } 
*/
  if (ddata.aj2a.value == "") {
    err += ' - ' + email + '\n';
  }
  else {
    if (!IsMail(ddata.aj2a.value)) {
    err += ' - ' + email2 + '\n';
    }
  }
  if (err != "") {
    window.alert(txt + ':\n' + err);
     
    return false;
  }
  else {
      return true;
    }
}

function IsMail(val) {
  var im = new RegExp("^[_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)*@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*(\.[a-zA-Z]{2,3})$");
  if (im.test(val)) {
    return true;
  }
  else {
    return false;
  }
}