Mozilla is working to re-imagine the web browser for tablet interfaces, with the apparent aim of grabbing a significant share of the iPad browsing market. The company has been showing off "Junior," the code-name for a prototype tablet browser that developers have been crafting for the past several months. As The Verge detailed, Junior would represent Mozilla's first big step into the iOS sector, where the company currently has only an iPhone-optimized companion app that syncs tabs from a desktop but relies on Safari for actual browsing functionality.