var browserType;

if (document.layers) {browserType = "nn4"}
if (document.all) {browserType = "ie"}
if (window.navigator.userAgent.toLowerCase().match("gecko")) {
   browserType= "gecko"
}

function hide(n) {
  if (browserType == "gecko" )
     document.poppedLayer = 
         eval('document.getElementById(n + "cloud")');
  else if (browserType == "ie")
     document.poppedLayer = 
        eval('document.getElementById(n + "cloud")');
  else
     document.poppedLayer =   
        eval('document.layers[n + "cloud"]');
  document.poppedLayer.style.visibility = "hidden";
}

function show(n) {
  if (browserType == "gecko" )
     document.poppedLayer = 
         eval('document.getElementById(n + "cloud")');
  else if (browserType == "ie")
     document.poppedLayer = 
        eval('document.getElementById(n + "cloud")');
  else
     document.poppedLayer = 
         eval('document.layers[n + "cloud"]');
  document.poppedLayer.style.visibility = "visible";
}

function changeAbout() {
	  //document.getElementById('n').className = "green";
	  document.getElementById("tag").setAttribute("class", "green");
	  document.getElementById("about").setAttribute("class", "white");
}

function changeTag() {
	  //document.getElementById('n').className = "white";
	  document.getElementById("about").setAttribute("class", "green");
	  document.getElementById("tag").setAttribute("class", "white");
}