function validate(formObj) {
  var warning = ""
  //Check email
  if (formObj.email.value == "") {
    warning += "\n     -  Email";
    formObj.email.focus();
  }
  //Check password
  if (formObj.password.value == "") {
    warning += "\n     -  Password";
    formObj.password.focus();
  }
 
  //Output error message
  if (warning != "") {
    warning = "ERROR:  The form cannot be submitted because\nthe following fields are incomplete or invalid:\n" +
    warning + "\n_____________________________" +
    "\nPlease re-enter and submit again!";
    alert(warning);
    return false;
  }
  formObj.submit();
}