OTTAWA - Interactive video firm Overlay.TV is vowing to take on-line shopping to the next level, just in time for the holiday season.The Ottawa-based company has partnered with on-line apparel and footwear retailer Zappos.com to bring its catalogue of products to life through video, transforming the way customers interact with the on-line store."The ability to see a product in action, to click on it for more information, to share it on Facebook, and add it to your cart without even leaving the page is a major change for this industry," said co-founder and CEO Rob Lane, in the announcement. "Our...