[TIMOB-11876] iOS 6: Drop shadow in navigation bar cannot be disabled through Titanium

   /*
   Modes 
   0 - No customization
   1 - Bar Image Only 
   2 - Bar Image + Hide Shadow
   3 - Bar Image + Custom Shadow
   */
   
   
   var count = 0;
   
   function openListener(e) {
       count = count+1;
   }
   
   function closeListener(e) {
       count --;
   }
   
   function clickListener(e){
       nav.openWindow(genWin());    
   }
   
   function genWin()
   {
       var temp = count % 4;
       var win = Ti.UI.createWindow({
           backgroundColor:'white',
           title: 'MODE '+temp
       })
   
       var str = 'MODE = '+temp+'\n';
   
       if (temp > 0) {
           win.barImage = 'images/slider_orangebar.png'
           str += 'barImage = images/slider_orangebar.png\n';
       }
   
       if (temp == 3) {
           win.shadowImage = 'images/slider_orangebar.png'
           str += 'shadowImage = images/slider_orangebar.png\n'
       }
   
       if (temp == 2) {
           win.hideShadow = true;
           str += 'hideShadow = true'
       }
   
       var label = Ti.UI.createLabel({
           text:str
       })
   
       win.add(label);
   
       win.addEventListener('click',clickListener);
       win.addEventListener('open',openListener);
       win.addEventListener('close',closeListener);
   
       return win;
   }
   
   var nav = Ti.UI.iOS.createNavigationWindow({
       window:genWin(),
       orientationModes:[Ti.UI.PORTRAIT,Ti.UI.LANDSCAPE_LEFT,Ti.UI.LANDSCAPE_RIGHT]
   })
   
   nav.open();