if (appData.sysTmrHandle != SYS_TMR_HANDLE_INVALID)
{
     SYS_TMR_ObjectDelete(appData.sysTmrHandle);        
     appData.sysTmrHandle = SYS_TMR_HANDLE_INVALID;
}
appData.state = APP_STATE_DRAW_NEXT_SLIDE;
GFX_HGC_ChangeScreen(SlideScreen);