How to call CI Model function from jQuery eventhandler?

[eluser]doni[/eluser]
and how about if i do need feed back?,let say i'm passing form value to CI's controller and i need feed back to my previous page to let know the user that their data has been saved to DB..

Code:

$('#update').click(function() {

        var kode = $('#KODE_KK').val();
        var nama = $('#NAMA_KK').val();
        var kod = $('#kodex').val();
        var kodKK = $('#kID').val();
    
        if(kode=='')
        {
            alert ('Kode Kantor Masih Kosong');
            return(false);
        }else if(nama==''){
            alert ('Nama Kantor masih kosong');
            return(false);
        }else{
        $.post("<?= site_url('sicon_a/kelas_kantor/update') ?>", {KODE_KK: kode,NAMA_KK: nama,kodex: kod,KODASL: kodKK},
            function() {
            $('#content').load("<?= site_url('sicon_a/kelas_kantor/view/ajax') ?>",{cache: false});
            $('#KODE_KK').val('');
            $('#NAMA_KK').val('');

        },function() { cache: false; });
        }
    });

and CI controller is:

Code:

function update()
    {
            $KODKK=$this->simos_dm_a->cekKODEKK($_POST['KODE_KK']);
            
           if($_POST['KODE_KK']<>$KODKK['KODE_VAL'] OR $_POST['KODASL']==$_POST['KODE_KK'])
          {
               $this->simos_dm_a->UpdateKK();
          }
        
    }