WP-ecommerce cannot load my image in single_product.php

When I tried to click the image displayed as well as the thumbnails in my single_product.php, what happens is that, I cannot see the images, it just like, loading forever without showing the image. Here is my site, please do help. https://macsopals.com/all-opal-products/unset-opals/ironstone-matrix/opal-id-101014-ironstone-matrix/