Added target _blank to all links on the presentation that do not start with # nor with javascript:
Added definition for the not found slide on the demo presentation
Added support to preloadImages settings...the splash screen, when enabled, will preload all the images if this flag is true
Added support to preload images even when not using the splash screen(by setting the preloadImages:true on the init method
Added some annotation comments to the missing methods
Added better comments to the source code on ppw.js file
Reorganized some source code definitions and comments