function showLayer(link) {
 //get the target from the link
 var target = link.getAttribute("href",2);
 //Trim the hash off the begining
 target = target.slice(1);
 
	document.getElementById('site1').style.display='none';
	document.getElementById('site2').style.display='none';
	document.getElementById('site3').style.display='none';
	document.getElementById('site4').style.display='none';
	document.getElementById('site5').style.display='none';
	document.getElementById('site6').style.display='none';
	document.getElementById('site7').style.display='none';
	document.getElementById('site8').style.display='none';
 
 //Make the correct layer visible
 document.getElementById(target).style.display='block';
 
 }
 
function prepareMenu()  {

 //Check browser works with these methods
 if (!document.getElementsByTagName) return false;
 if (!document.getElementById) return false;
 //check element exists on the page
 if (!document.getElementById("sitelist")) return false;
 // set easy to use vars
 var menu = document.getElementById("sitelist");
 var links = menu.getElementsByTagName("a");
 //Loop through the links and reset their behaviour
 for ( var i=0; i < links.length; i++) {
  links[i].onclick = function() {
   showLayer(this);
   return false;
   }
  }
 }
 
 
function hidelayers() {
// var copy = document.getElementById("copy");
// var layers = copy.getElementsByTagName("div");
 
// for ( var i=0; i < layers.length; i++) {
 // var title = layers.getAttribute("title");
 // alert(title);
 // }
	document.getElementById('site2').style.display='none';
	document.getElementById('site3').style.display='none';
	document.getElementById('site4').style.display='none';
	document.getElementById('site5').style.display='none';
	document.getElementById('site6').style.display='none';
	document.getElementById('site7').style.display='none';
	document.getElementById('site8').style.display='none';
 }
 

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}
 
addLoadEvent(hidelayers);
addLoadEvent(prepareMenu);