[PHP Shopping Cart - Return URL After Add to Cart not working]

Hope someone can help

 

I used 'metro-webdesign.info' to create my desired site.  I am busy implementing a shopping cart which I am busy developing in php. 

 

When you click on Add to Cart, it sees and excecutes cart_update.php but never returns back to the shopping list, which is index.php.

 

I hope you understand...please help

        while($obj = $results->fetch_object())
        {
			echo '<div class="product">'; 
            echo '<form method="post" action="http://localhost/functions/#!/url=cart_update.php">';
			echo '<div class="product-thumb"><img src="img/products/'.$obj->product_img_name.'" width="100px"></div>';
            echo '<div class="product-content"><h3>'.$obj->product_name.'</h3>';
            echo '<div class="product-desc">'.$obj->product_desc.'</div>';
            echo '<div class="product-info">';
			echo 'Price '.$currency.$obj->price.' | ';
            echo 'Qty <input type="text" name="product_qty" value="1" size="3" />';
			echo '<button class="add_to_cart">Add To Cart</button>';
			echo '</div></div>';
            echo '<input type="hidden" name="product_code" value="'.$obj->product_code.'" />';
            echo '<input type="hidden" name="type" value="add" />';
			echo '<input type="hidden" name="return_url" value="'.$current_url.'" />';
            echo '</form>';
            echo '</div>';
        }