function validateLoginForm(form) {
    var frm = form;
    var msg = "";
    
    if (frm.username.value == "") {
      alert("Please provide your Username.");
      frm.username.focus();
      return false;
    }
    
    if (frm.password.value == "") {
      alert("Please provide your Password.");
      frm.password.focus();
      return false;
    }
  
    return true;
  }