It will not show up when new users enter my site, and shows an error in the index.php file. Here is the java script
// Visitor tracking Javascript
if(isset($_REQUEST['action'])) {
if($_REQUEST['action'] == "tracking_script") {
$visitor = GetClass('ISC_VISITOR');
$visitor->OutputTrackingJavascript();
}
else if($_REQUEST['action'] == "track_visitor") {
$visitor = GetClass('ISC_VISITOR');
$visitor->TrackVisitor();
}