I have two cs-cart sites that are more or less Identical. On one site my login pops up in like a fancybox / lightbox. The other site just has a login page.
do you think you can share the answer
Right after I posted this I found the answer. ( At least in my case)
One site has SSL and one does not.
If you have the "use SSL for logins" checked then you will not get the popup (since it is not secure), instead it directs you to a secure page for the login.
SOURCE:
http://forum.cs-cart.com/topic/15398-sign-in-popup-box-doesnt-work/
great thx