function focus_subject()
{
  if (document.email_form != null) {
    document.email_form.subject.focus();
  }
}


function focus_name()
{
  if (document.email_form != null) {
    document.email_form.from_name.focus();
  }
}


function disable_info()
{
  document.email_form.from_name.disabled = true;
  document.email_form.reply_to.disabled = true;
  focus_subject();
}


function check_form()
{
  if (document.email_form != null) 
  {    
    if (document.email_form.from_name.value == '') 
    {
      alert("Please enter your name.");
      document.email_form.from_name.focus();
      return false;
    }
    
    if (document.email_form.reply_to.value == '') 
    {
      alert("Please enter your email address.");
      document.email_form.reply_to.focus();
      return false;
    }
    
    if (document.email_form.subject.value == '') 
    {
      alert("Please enter a subject.");
      document.email_form.subject.focus();
      return false;
    }
    
    if (document.email_form.message.value == '') 
    {
      alert("Please enter a message.");
      document.email_form.message.focus();
      return false;
    }  
    
    return true;
  }
}