If you’re using WP Zon Builder 2.0 with Fancybox image galleries enabled, download this fix to get the close, previous, and next buttons working properly in IE 8. This fix will be/has been incorporated into the next release of 2.x. If you are not running 2.0, you don’t need this.
Replace /wp-content/plugins/amzn/amzngallery.php with the file in the zip.
Delete the /fancybox/ folder inside /wp-content/plugins/amzn/. Then place the /fancybox/ folder in the zipat /wp-content/plugins/amzn/fancybox/