function validateNPANXX() {
  
  var npanxxRegex = /\d{3}/;  
  
  if (!npanxxRegex.test(document.getElementById("npa-number").value)) {
    document.getElementById("geofilter-error").style.display = "block";
    document.getElementById("npa-number").focus();
    return false;
  }
	
  if (!npanxxRegex.test(document.getElementById("nxx-number").value)) {
    document.getElementById("geofilter-error").style.display = "block";
    document.getElementById("nxx-number").focus();
    return false;
  }
  document.getElementById("npanxx").value = "" + document.getElementById("npa-number").value + document.getElementById("nxx-number").value;  
  //alert(document.getElementById("npanxx").value);
  
  return true;
}

function validateZip() {
  
  var zipRegex = /\d{5}/;  
  
  if (!zipRegex.test(document.getElementById("zip-code").value)) {
    document.getElementById("geofilter-error-zip").style.display = "block";
    document.getElementById("zip-code").focus();
    return false;
  }
  
	return true;
}