// JavaScript Document
function isEmailAddr(Email)
{
  var result = false
  var theStr = new String(Email)
  var index = theStr.indexOf("@");
  if (index > 0)
  {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
	result = true;
  }
  return result;
}

function FormValidator(theForm)
{

  if (theForm.email_address.value == "")
  {
    alert("Please enter a value for the \"Email\" field.");
    theForm.email_address.focus();
    return (false);
  }

  if (!isEmailAddr(theForm.email_address.value))
  {
    alert("Please enter a complete email address in the form: yourname@yourdomain.com");
    theForm.email_address.focus();
    return (false);
  }

  if (theForm.email_address.value.length < 3)
  {
    alert("Please enter at least 3 characters in the \"Email\" field.");
    theForm.email_address.focus();
    return (false);
  }

  if (theForm.first_name.value == ""){

      alert("Please enter a value for the \"First Name\" field.");

      theForm.first_name.focus();

      return (false);
   }

  if (theForm.last_name.value == ""){

      alert("Please enter a value for the \"Last Name\" field.");

      theForm.last_name.focus();

      return (false);
   }

  if (theForm.city.value == ""){

      alert("Please enter a value for the \"city\" field.");

      theForm.city.focus();

      return (false);
   }

  if (theForm.address_line_1.value == ""){

      alert("Please enter a value for the \"Address\" field.");

      theForm.Address.focus();

      return (false);
   }

  if (theForm.postal_code.value == ""){

      alert("Please enter a value for the \"Zip Code\" field.");

      theForm.postal_code.focus();

      return (false);
   }

  if (theForm.refer.value == ""){

      alert("Please select a value for the \"How did you hear about TCAIS?\" field.");

      theForm.refer.focus();

      return (false);
   }

  if (theForm.optin.checked == false){
      alert("You must check \"I want to receive mailings from TCAIS\" in order to submit this form.");

      theForm.optin.focus();

      return (false);
  }

  return (true);
}