javascript - Items in slider window not showing until inspect element is used -


the items in "accessories" pane not displayed upon loading in prestashop web site developed. height of element (pane) shows 0px.

however, once "inspect element" function in firefox or "inspect" in google chrome used, items appear in accessories window correctly.

yet disappear again if page reloaded or refreshed! know how solve problem?

below links sample pages:

http://www.filterdepot.ca/index.php?id_product=8&controller=product

http://www.filterdepot.ca/index.php?id_product=78&controller=product


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