function detectActiveLayer(_activeLayer, _dormantLayer) {
  //  console.log("called")
    try {
    //    console.log("document.getElementById(_activeLayer).getElementsByTagName('table').length: " + document.getElementById(_activeLayer).getElementsByTagName('table').length)
        if (document.getElementById(_activeLayer).getElementsByTagName('table').length == 0) {
            document.getElementById(_dormantLayer).style.display = 'block';
            document.getElementById(_activeLayer).style.display = 'none';
        }
    }
    catch (e) {
        // document.getElementById(_dormantLayer).style.display = 'block';
      //  console.log("error")
    }
}
 Event.observe(window, 'load', function() { detectActiveLayer('sasdData', 'apsData'); });