How to style a php variable??

[DesignLessDesign]

Ok, so I have a very picky customer and they wern't simply happy with the standard way zen cart shows the size, quantity and add to cart button. Then needed to have them all in a row and I've managed to track that down to the tpl_product_info_display.php file.

My problem is that I can't get the add to cart button to float right with a slight amount of top padding to allow it to all line up correctly. I'm really not good with php, which is great for trying to do these advance modifications. So hopefully thats where you guys come in.

You can take a look at an example of my issue HERE

I'm pretty sure the issue is in fact in the tpl_product_info_display.php file but have had zippy success so far. Here's the area in the code that I was succesfully able to modify to get the quantity box and add to cart button side by side instead of on top of each other

          <?php
    $display_qty = (($flag_show_product_info_in_cart_qty == 1 and $_SESSION['cart']->in_cart($_GET['products_id'])) ? '<p>' . PRODUCTS_ORDER_QTY_TEXT_IN_CART . $_SESSION['cart']->get_quantity($_GET['products_id']) . '</p>' : '');
            if ($products_qty_box_status == 0 or $products_quantity_order_max== 1) {
              // hide the quantity box and default to 1
              $the_button = '<input type="hidden" name="cart_quantity" value="1" />' . zen_draw_hidden_field('products_id', (int)$_GET['products_id']) . zen_image_submit(BUTTON_IMAGE_IN_CART . 'style="float:right"', BUTTON_IN_CART_ALT);
            } else {
              // show the quantity box
    $the_button = PRODUCTS_ORDER_QTY_TEXT . '<input type="text" name="cart_quantity" value="' . (zen_get_buy_now_qty($_GET['products_id'])) . '" maxlength="6" size="4" />' . zen_get_products_quantity_min_units_display((int)$_GET['products_id']) . '' . zen_draw_hidden_field('products_id', (int)$_GET['products_id']) . zen_image_submit(BUTTON_IMAGE_IN_CART, BUTTON_IN_CART_ALT);
            }
    $display_button = zen_get_buy_now_button($_GET['products_id'], $the_button);
  ?>
  <?php if ($display_qty != '' or $display_button != '') { ?>
    <div id="cartAdd">
    <?php
      echo $display_qty; 
      echo $display_button;
            ?>
          </div>
  <?php } // display qty and button ?>

If I were able to define an id to the BUTTON_IMAGE_IN_CART variable then I could easily float right and pad.

Is there an easy way to modify that variable? Help me I'm lost and I can't get paid til I get this last thing done!!!