function validate2()
{ if (document.form.name.value == "")
  { alert("Please enter your name.");
    return false; 
  }
  if (document.form.address.value == "")
  { alert("Please enter your postal address.");
    return false; 
  }
  
    if (document.form.phone.value == "")
  { alert("Please enter your phone number.");
    return false; 
  }
  
  if (document.form.email.value != "")
  { if (document.form.email.value.indexOf("@") == -1 || document.form.email.value.indexOf(".") == -1 || document.form.email.value.indexOf(" ") != -1 || document.form.email.value.length < 6)
    { alert("Sorry, the email address does not appear to be valid.");
      return false; 
    }
  }
 
  if (document.form.email.value == "")
  { alert("Please enter your email address.");
    return false; 
  }
}