Issue the checkBox and select the action not done

I have Issue when i select the action on select and coched all checkbox and click on ok not do anything this datatables contains the checkbox my following code :

    function toggleChecks(obj)
{
    $('.case').prop('checked', obj.checked);
}
    $(document).ready(function() {
        tablecontact = $('#table-contact').dataTable({


              "info": true,
              "aoColumns": [{ "sTitle": "<input type='checkbox' name='selectedContact[]' id='selectAll'  onclick='toggleChecks(this);' ></input>", "mDataProp": null, "sWidth": "20px", "sDefaultContent": "<input type='checkbox' id="table-selected-<?=$this->idContact; ?>" value='<?=$this->idContact ;?>' class='case'></input>", "bSortable": false },null,null,null,null,null,null,null,null],
              'sDom': 'lTfr<"clearfix">tip',
              'oTableTools': {
              'aButtons': []
                          } ,        

              "fnRowCallback": function( nRow, aData, iDisplayIndex ) {//lien edition
                 $('td:eq(8)', nRow).html( '<a href="/<?=Zend_Registry::get('Zend_Locale')->getLanguage();?>/admin/contact-management/updatecontact/idContact/'+aData[0]+'"><b>'+aData[8]+'</b></a>' );
                      return nRow;
              }, 


        });

         var tt = new $.fn.dataTable.TableTools( table );
        $( tt.fnContainer() ).insertBefore('div.dataTables_wrapper');
and the select the action when i selected all checkbox i want do action and click ok but not work 

    <select name="table-action" id="table-action" class="small">
<option value="0">Appliquer à la sélection</option>
<option value="unsetemailnotification">UnsetEmailNotification</option>
        </select>
<button type="submit" class="small" id="actionContact">Ok</button>
 on my controller the following code :
:` public function setemailnotificationAction()
    {
        $ids = explode(';', $this->_request->getParam('listId',0));
        $contact = new Admin_Model_DbTable_Contact();
        if(!empty($ids))
        {
            foreach($ids as $id)
            {
                if(!$contact->setemailnotificationContact(intval($id)))
                {
                    echo json_encode(array(
                            "response" => "false",
                            "errorMessage" => "Il y a eu une erreur dans l'activation de l'email notification: ". $id
                    ));
                    exit();
                }
            }

            ));
            exit();
        }

        exit();
    }`

and i do that on .phtml :

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

var confirmAction = true;
var listId = '';   
var selectAction = $("#table-action").val();
$(".sorting_1").find(':checkbox:checked').each(function(){
    if(listId.length == 0){
        listId +=  $(this).val();
    }else{
        listId += ";" + $(this).val();
    }           
});

});

Thanks in advance