function validator(form) { 

  if (form.name.value == "") {
    alert("Please provide us with your NAME.");
    form.name.focus();
    return false;
  }
  
  if (form.email.value == "") {
    alert("Please provide us with your EMAIL ADDRESS.");
    form.email.focus();
    return false;
  }
  
  if (form.phone.value == "") {
    alert("Please provide us with your TELEPHONE NUMBER.");
    form.phone.focus();
    return false;
  }  

return true; 
}