<!--

// browser detect (assigns name and version number to variables)
var browserName = navigator.appName;
var browserVersion = parseFloat(navigator.appVersion);


function showLayer(menuName) {
// this function sets the visibility of specified layers to 'visible'
  if (browserName == "Microsoft Internet Explorer")  {
    document.getElementById(menuName).style.visibility = 'visible';
  } else {
    document[menuName].visibility = 'visible';
  }  // if
} // function showLayer


function turnOffMenu() {
// turns off all of the layers

  if (browserName == "Microsoft Internet Explorer")  {
    // ie version of the hide commands
    document.getElementById('about').style.visibility = 'hidden';
    document.getElementById('products').style.visibility = 'hidden';
  } else {
    // netscape version of the hide commands
    document.about.visibility = 'hidden';
    document.products.visibility = 'hidden';
  }  // if

  // clears the Timeout called by the setMenuTimer function
  clearTimeout(menuTimer);
} // function turnOffMenu


function setMenuTimer() {
  // sets a 250 millisecond timer, to allow a delay when mousing-off drop downs
  menuTimer = setTimeout("turnOffMenu()",1000);
} // function setMenuTimer

// -->