Hi,
1/ The cart you're talking about is not related to HikaShop or our support but is provided by your template.
2/ You have javascript error in your page ; first one is related to "shadowbox" ; I guess you're not using the right mode for your "image popup" system.
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.