function buildRedirect()
{
var sPath = location.href;
var sRedirect = sPath.substring(0, sPath.lastIndexOf('/') + 1) + 'signupcomplete.html';
return sRedirect;
}

/* ================================ */

function checkSignup()
{
if ((document.signup.realname.value == '') ||
    (document.signup.email.value == '') ||
    (document.signup.addr1.value == '') ||
    (document.signup.city.value == '') ||
    (document.signup.state.value == '') ||
    (document.signup.zip.value == ''))
{
  alert('Please provide values for all required fields');
  return false;
}

else
{
  document.signup.contactname.value = document.signup.realname.value;
  document.signup.contactemail.value = document.signup.email.value;
  document.signup.redirect.value = buildRedirect();
  return true;
}

}

/* ============================== */