function hand_onhover()
{document.getElementById('hand').style.top='187px';
}

function hand_outhover()
{document.getElementById('hand').style.top='175px';
}


function random() {
return Math.floor(Math.random() * 3) + 1;
}

function start () {
  document.getElementById('tv_images').className="tv_images"+random();
  }