function valid(form) {
  if (form.name.value=='') {
    alert("You must indicate your Name.");
    form.name.style.backgroundColor='#F3DDD5';
    return false;
  }
  else { form.name.style.backgroundColor=''; } 
  
if (form.phone.value=='') {
    alert("You must indicate your Phone Number.");
    form.phone.style.backgroundColor='#F3DDD5';
    return false;
  }
  else { form.phone.style.backgroundColor=''; }
  
  if (form.email.value=='') {
    alert("You must indicate your Email Address.");
    form.email.style.backgroundColor='#F3DDD5';
    return false;
  }
  else { form.email.style.backgroundColor=''; }
  

  return true;
}