This page appears to be using a different style datepicker. I think it is using the bootstrap datepicker. Try using format instead of dateFormat in the creator function.
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.