I noticed that you are using a snippet of JS to load our snippet of JS onto the page. Your snippet of JS appears to be failing on the https version.
Here is the snippet:
var clubNumberFull = getCookie("club");
var mydomain="http://"+window.location.hostname;
HttpRequest(mydomain+"/snippets/product_php.html?club_id="+clubNumberFull);
When I run this directly in the console (like Firebug) I get this error on the https page:
"Component returned failure code: 0x80004005 (NS_ERROR_FAILURE)"
When I run this same snippet on the http page I get what appears to be a valid response with our JS code in it.
Adam