Récupérer la valeur de checkbox dynamiques

Bonjour, je travaille sur un site sharepoint wss 3.0 et à l'aide du javascript j'ai pu ajouter un feature qui permet d'ajouter une colonne de type checkbox.
Mon problème réside que j'arrive pas à récupérer les données de la ligne sélectionnée.
voici le fichier javascript que j'ai utilisé afin d'ajouter la colonne checkbox.
Code:
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<script type="text/javascript" src="/_layouts/jQuery/jquery.min.js"></script>
<script type="text/javascript">
 
function CreateParentInputCheckBox(webPartId) 
{    return $("<th nowrap scope='col' class='ms-vh2'></th>").append(               
     $("<input type='checkbox' title='(de)select all items' />").attr("id", webPartId + "0").click(function() 
        { var checked = $(this).attr("checked");$("[id^=" + webPartId + "_]").attr("checked", checked); })
      );           
}
 
function CreateChildInputCheckBox(webPartId, itemId)
{    
    return $("<td></td>").append($("<input type='checkbox' />").attr("id", webPartId + "_" + itemId).val(itemId).click(function() 
    { $("#" + webPartId + "0").attr("checked", $(this).attr("checked") && $("[id^=" + webPartId + "_]:not(:checked)").length == 0); })            
    );
} 
 
function AddCheckBoxesToListView(webPartId) 
{    
    $("#" + webPartId + " table.ms-listviewtable>tbody").find(">tr.ms-viewheadertr").prepend(CreateParentInputCheckBox(webPartId)).end()
    .find(">tr:not(.ms-viewheadertr)").each(function() 
    { var itemId = $(this).find("td.ms-vb-title>table[id]").attr("id");                    
        if (itemId) 
        {
            $(this).prepend(CreateChildInputCheckBox(webPartId, itemId));
        }                
     });
}
 
function IsSelectable(webPartId) 
{    
    var selectableItems = $("#" + webPartId + " table.ms-listviewtable>tbody>tr:not(.ms-viewheadertr)>td.ms-vb-title>table[id]").length;   
    return selectableItems > 0;
} 
 
function RemoveCheckBoxesFromListView(webPartId) 
{    
    $("[id^=" + webPartId + "_], #" + webPartId + "0").parent().remove();
} 
 
function GetSelectedItemsString(webPartId) {
    return GetSelectedItemsArray(webPartId).join(",");
}
/*
function GetSelectedItemsString(webPartId) 
{    
    var selectedIds = new Array();
    $("[id^=" + webPartId + "_]:checked").each(function() 
    {
        selectedIds.push($(this).val());
     });     
     return selectedIds.join(",");
}
 */
function ListItemSelection_ButtonClick(senderId, webPartId) 
{   
  //jQueryon mozilla does not work with namespaces. We have to work with plain old javascript here...    
    var sender = document.getElementById(senderId);     
    if (sender.getAttribute("remove")) 
    {        
        RemoveCheckBoxesFromListView(webPartId);        
        sender.setAttribute("text" ,"Enable item selection");      
        sender.setAttribute("description", "Enable the selection of items.");
        sender.removeAttribute("remove");
    }
    else 
    {        
        AddCheckBoxesToListView(webPartId);
        sender.setAttribute("text", "Disable item selection")       
        sender.setAttribute("description", "Disable the selection of items.");        
        sender.setAttribute("remove", true);    
    }
}
 
function ListItemSelection_Init(senderId, webPartId) 
{    
    if (!IsSelectable(webPartId)) 
    {        
        var sender = document.getElementById(senderId);        
        sender.parentNode.removeChild(sender);    
    }
}
 
 
 
/* Add this function */
function GetSelectedItemsArray(webPartId){
    var selectedIds = new Array();
    $("[id^=" + webPartId + "_]:checked")
        .each(function() {
                selectedIds.push($(this).val());
        });
 
    return selectedIds;
}
 
 
var wpID; // Used to identify the current webpart. We need this to find out where to apply the checkboxes
 
var existingMethod = ExpGroupReceiveData; // overriding ExpGroupReceiveData method to make it possible to add checkboxes to received items
 
ExpGroupReceiveData = function(){
    existingMethod.apply(this , arguments); // apply the original properties of the function
 
    if (!wpID){ // let's identify the webpart in question
        wpID = $('tbody#titl'+arguments[1]).parents('div[id^=WebPart]').attr('id');
    }
 
    var selectedItems = GetSelectedItemsArray(wpID); // let's save state of selected checkboxes
 
    RemoveCheckBoxesFromListView(wpID); // remove existing checkboxes    
    AddCheckBoxesToListView(wpID); // add checkboxes to webpart group items
 
    $.each(selectedItems, function(i){ // reapply state to previously selected checkboxes
        $('#' + wpID + '_' + selectedItems[i]).attr("checked", true);
    });
}
</script>
 
<script type="text/javascript">
$(function(){
  //Spécification à la main du qualifier qui m'intéresse
  var monWP ='WebPartWPQ1';
  AddCheckBoxesToListView(monWP);
  $('#showSelect').click(function(){
    //alert(GetSelectedItemsArray(monWP));
    $('#selectedItemsList').html(GetSelectedItemsArray(monWP).join(';'));
  });
});
</script>
<a href="#" id="showSelect">Cliquer ici pour voir les éléments</a>
<div id="selectedItemsList"></div>
j'attends vos commentaires.

Merci