Hi,
I can't see the first website ; it requires an authentication.
But about the second website,yes you have a view override for the product listing (img_title one, yes) to add the image popup ; because that is not provided by default in HikaShop.
By default the thumbnail image is displayed ; but you can load and use the hikashop popup helper to create the image popup, like it is done in the product page.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.