Moving between cells of a table

by A B

HTML

<table id="ExpectedDeliveries" cellpadding="0" cellspacing="0" class="tableStatic">
    <caption>3 Settimane</caption>
    <thead>
        <tr>
            <th><div>Campo 1</div></th>
            <th><div>Campo 2</div></th>
            <th><div>Campo 3</div></th>
        </tr>
    </thead>
    <tbody id="ExpectedDeliveriesBody">
        <tr id="1" class="A"> 
            <td>
                <input type="text" value="" class="InputElement" />    
            </td>
            <td>
                <input type="text" value="" class="InputElement" />    
            </td>
            <td>
                <input type="text" value="" class="InputElement" />    
            </td>            
        </tr>   
        <tr id="2" class="A"> 
            <td>
                <input type="text" value="" class="InputElement" />    
            </td>
            <td>
                <input type="text" value="" class="InputElement" />    
            </td>
            <td>
                <input type="text" value="" class="InputElement" />    
            </td>             
        </tr>    
        <tr id="3" class="A"> 
            <td>
                <input type="text" value="" class="InputElement" />    
            </td>
            <td>
                <input type="text" value="" class="InputElement" />    
            </td>
            <td>
                <input type="text" value="" class="InputElement" />    
            </td>           
        </tr>   
        <tr id="4" class="A"> 
            <td>
                <input type="text" value="" class="InputElement" />    
            </td>
            <td>
                <input type="text" value="" class="InputElement" />    
            </td>
            <td>
                <input type="text" value="" class="InputElement" />    
            </td>           
        </tr>         
        </tbody>
</table>

JavaScript

$("#ExpectedDeliveries").delegate(".InputElement", "keydown", function(event) {
if (event.keyCode == 38) {
$(this).closest('tr').children('td.InputElement').focus();
            }

});