Append and bind click not working on IE (jQuery)

Question

Im using this short code for adding some more fields to an online shopping cart, they work great in FF but get broken on IE, any help would be aprecciated

 $(document).ready(function () {
 $('#agregar').bind('click', function (){
 $('#tabla').append("<tr><td><input type='text' name='codigo[]' class='box' /></td>
 <td><input type='text' name='Talla[]' class='box' /></td><td>
 <input type='text' name='color[]' class='box' /></td><td>
 <input type='text' name='cantidad[]' class='box last' /></td></tr>")}) ; return false  })