//==============================================================================
// DHTML utility functions
// Note: must define oldLayer in any page that uses these functions
//==============================================================================

function showLayer(thisLayer) {
  if (oldLayer != "") {
    toggleDisplay(oldLayer);
  }
  toggleDisplay(thisLayer);
  oldLayer = thisLayer;
}

function toggleDisplay(content) {
  if (document.getElementById) {
    thisContent = document.getElementById(content).style;
    if (thisContent.display == "block") {
      thisContent.display = "none";
    } else {
      thisContent.display = "block";
    }
    //return false;
  //} else {
  //  return true;
  }
}