// Basic check on email address and pop-up our confirmation window
function checkForm( ) 
{
  var emailFilter=/^.+@.+\..{2,3}$/;

  if ( document.forms["order"]["email"].value == "" ) 
  {
    alert("No email address was entered. Please try again.");
    return false;
  }
  else if (!(emailFilter.test( document.forms["order"]["email"].value )))
  {
    alert("You have not entered a valid email address. Please try again.");
    return false;
  }
  else
  {
window.open('','newsletter','width=300,height=160,resizable=no,scrollbars=no,toolbar=no,location=no,directories=no,status=no,menubar=no,copyhistory=no');
    return true;
  }
  
}