function changepic(id)
{
  document.getElementById('im' + id).className = 'running';
  setTimeout("realchangepic('" + id + "', 1)",650);
}
function realchangepic(id, num) {
  if(document.getElementById('im' + id).className != 'stopped') {
    document.getElementById('im' + id).src = 'http://video2.easychannel.hk/thumbnail2/' + id + '_' + num + '.jpg';
    if(num != 3) {
      num++;
      setTimeout("realchangepic('" + id + "', " + num + ")",650);
    } else {
    	setTimeout("realchangepic('" + id + "', 1)",650);
    }
  }
}

function changeout(id) {
  document.getElementById('im' + id).className = 'stopped';
  document.getElementById('im' + id).src = 'http://video2.easychannel.hk/thumbnail/' + id + '.jpg';
}