function displayStation(selectList)
{  clearStations();

   var myNum = selectList.options[selectList.selectedIndex].value;
   var divName = 'showtime' + myNum;
   var element = document.getElementById(divName);
   element.style.display = 'block';
}

function clearStations()
{  for (var i = 1; i <= 120; i++)
   {  var divName = 'showtime'  + i;   
      var element = document.getElementById(divName);
      element.style.display = 'none';
   }
}