function verifyRequired() {
  if (document.icpsignup["fields_email"].value == "") {
    document.icpsignup["fields_email"].focus();
    alert("The Email field is required.");
    return false;
  }
  if (document.icpsignup["fields_fname"].value == "") {
    document.icpsignup["fields_fname"].focus();
    alert("The First Name field is required.");
    return false;
  }
  if (document.icpsignup["fields_lname"].value == "") {
    document.icpsignup["fields_lname"].focus();
    alert("The Last Name field is required.");
    return false;
  }

    if (
      !document.icpsignup["listid:9887216"].checked &&
      !document.icpsignup["listid:9888716"].checked &&
      true)  {
    alert("The Lists field is required.");
    return false;
  } 

return true;
}