<div class="cartShingle_shoppingcart"></div>
          
<div class="row-fluid">
  <div class="demo_button span4 pull-right">
    <button class="btn pull-right cart_checkout" id="btn_checkout">Checkout</button>
  </div>
</div>
$(function () {

    cartShingle.init('1994823472373064785');

});