var thisPage = location.href; 
var sPath = window.location.pathname;
var sPage = sPath.substring(sPath.lastIndexOf('/') + 1);

window.onload=initAll;

function initAll(){
  //alert(sPage);
  switch (sPage)
    {
     case "index.html":
       //clear all area settings on home page
       eraseCookie('area');
       break;
     case "newton-aycliffe-rock-climbing-centre-co-durham.html":
       displayNA();
       break;
     case "middlesbrough-once-open.html":
       displayMiddlesbrough();
       break;
    }
  CurrentNavLink();
  var currentarea = readCookie('area')
  //alert('current'+ currentarea);
  if (currentarea) {
    switch (currentarea)
      {
       case "NA": 
        displayNA();
        break;
       case "Middlesbrough": 
        displayMiddlesbrough();
        break;
      } 
    } 
    else { 
    }
}

function displayNA() {
//alert('NA');
  createCookie('area','NA',0);
  setDisplayOff('navCatBlock6');
  setDisplayOn('navCatBlock7');
}

function CurrentNavLink() {
  //Left Nav
  if (!document.getElementsByTagName) return; 
  var anchors = document.getElementsByTagName("a"); 
  for (var i=0; i<anchors.length; i++) { 
    var anchor = anchors; 
    thisHREF = anchor[i].getAttribute("href");
    if ((thisHREF == thisPage) && (anchor[i].className == 'nav')){ 
       //this is the left nav
       anchor[i].className = "current";
       break;
    }
  }
} 

function displayMiddlesbrough() {
  createCookie('area','Middlesbrough',0); 
  setDisplayOff('navCatBlock7');
  setDisplayOn('navCatBlock6');
 }


function setDisplayOn(e){
  element = document.getElementById(e);
  if (element){
   //if IE
   if (element.currentStyle){
       element.style.display='block';
       element.style.visible='visible';
   } else {
    //if FF
    element.setAttribute( 'style', 'display:block');
   }
  }
}

function setDisplayOff(e){
  element = document.getElementById(e);
  if (element){
   //if IE
   if (element.currentStyle){
       element.style.display='none';
       element.style.visible='hidden';
   } else {
    //if FF
    element.setAttribute( 'style', 'display:none');
   }
  }
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}