Try adding the div into the footer, instead of outside of the footer. The image is in the footer, and if the footer is cut off, then the background image is as well.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.