function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
function showLayer(DivId) {
  document.getElementById(DivId).style.display = "block";
}
function hideLayer(DivId) {
  document.getElementById(DivId).style.display = "none";
}
function show2011() {
  document.getElementById('shows20072008').style.display = "none";
  document.getElementById('shows20092010').style.display = "none";
  document.getElementById('shows2011').style.display = "inline";
}
function show20092010() {
  document.getElementById('shows20072008').style.display = "none";
  document.getElementById('shows2011').style.display = "none";
  document.getElementById('shows20092010').style.display = "inline";
}
function show20072008() {
  document.getElementById('shows20092010').style.display = "none";
  document.getElementById('shows2011').style.display = "none";
  document.getElementById('shows20072008').style.display = "inline";
}