DeBug Joomla VirtueMart site

Existing Joomla / Virtuemart site [login to view URL] visitors are getting this error when trying to access a store category (Adenium) from the horizontal menu This is the error: Fatal error: Call to undefined function vm_border_item_top() in /home/content/29/6915029/html/shopdurham/components/com_virtuemart/themes/vmtheme014/templates/common/[login to view URL] on line 27 Error appeared after our coder added a multiple image feature to the VirtueMart product description I have a few more minor fixes that I need to have done. Such as missing reference links on a couple graphics, etc. PM me and I will be happy to discuss the full scope. Thank you in advance for bidding