how to make infinity scroll work as the code i worked is not working?

[shan2batman]

Guys i'm trying to create a infinite scroll feature for a project of mine and i couldn't make it work in the infinite scroll fashion any inputs would be appreciated.

 

Jquery code:

$(document).ready(function(){
        var load=0;

     var sess_uname="<?php echo $session_uname;?>";
     var f_uname="<?php echo $f_uname;?>";
     var sess_count="<?php echo $total_sess_count;?>";
     var f_count="<?php echo $total_friend_count;?>";
     if(sess_uname==f_uname){
         $(window).scroll(function(){
             if($(window).scrollTop()==$(document).height()-$(window).height()){
             load++;
             alert('hai1');
             if(load *5 >sess_count){
                 $(".message").text("no more posts to show");
             }else{
                 $.post("st&com.php", {load:load},function(data){
                    // $(".status_area").append(data);
                    alert('hai');
                 });
             }
             }
         });
     }   
    });

here is the php code:

$load= (int)($_POST['load'])*2;
$sess_id=(int)$_SESSION['id'];
$friends = array();
$stmt= $conn->prepare("select friend_one, friend_two from friends where (friend_one=:session OR friend_two=:session) and accepted='1'");
$stmt->bindparam(":session",$_SESSION['uname']);
$stmt->execute();
$fetch=$stmt->fetchAll();
$count=count($fetch);
if($count==0){
$totalids=$project->totalUpdates1($sess_id,$load);

here is the class:

public function totalUpdates1($id, $load) {
    $sql2="SELECT * FROM updates WHERE user_id_u=:id order by time desc limit $load,5";
    $stmth=  $this->_db->prepare($sql2);//Check here syntax of $db 
    $stmth->bindValue(":id",$id);
    //$stmth->bindValue(":load",$load);
    $stmth->execute();
    return $stmth->fetchAll();
}

[shan2batman]

problem fixed, no need to worry abt this