function keyNavigation(evt){
  var key = (evt.which) ? evt.which : event.keyCode;
  if (String.fromCharCode(key)=="1"){
    slideshow.jumpToSlide(0);
  }
  else if (String.fromCharCode(key)=="2"){
    slideshow.jumpToSlide(1);
  }
  else if (String.fromCharCode(key)=="3"){
    slideshow.jumpToSlide(2);
  }
  else if (String.fromCharCode(key)=="4"){
    slideshow.jumpToSlide(3);
  }
  else if (String.fromCharCode(key)=="5"){
    slideshow.jumpToSlide(4);
  }
  else if (String.fromCharCode(key)=="p"){
    slideshow.pausePlay();
  } 
}