function checkFields() 
{
  missinginfo = "";
  if (document.nameform.name.value == "") 
  {
    missinginfo += "\n     -  Name";
  }
  if (document.nameform.company.value == "") 
  {
    missinginfo += "\n     -  Company";
  }
  if (document.nameform.telephone.value == "") 
  {
    missinginfo += "\n     -  Telephone";
  }
  if ((document.nameform.email.value == "") || 
     (document.nameform.email.value.indexOf('@') == -1) || 
     (document.nameform.email.value.indexOf('.') == -1)) 
  {
    missinginfo += "\n     -  Email address";
  }
  if(document.nameform.smail.value == "") 
  {
    missinginfo += "\n     -  Postal Adress";
  }

  if (missinginfo != "") 
  {
    missinginfo ="_____________________________\n" +
    "You failed to correctly fill in your:\n" +
    missinginfo + "\n_____________________________" +
    "\nPlease re-enter and submit again!";
    alert(missinginfo);
    return false;
  }
  else return true;
}