//PMCKAY
//adjusted setActiveStylesheet function to cope with the addition of ctl00_ onto the ID of the control
//this doesn't seem to happen in any other project, I think it is due to the Header.Databind call that was necessary
//to get the CSS links to resolve correctly.

function setActiveStyleSheet(title,id) {
  var i, a, main, rep, name;
  rep = "ctl00_";
  id = id.replace(rep, "");
  
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
	if (a.getAttribute("title") && a.getAttribute("id"))
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title").indexOf(title) != -1 && a.getAttribute("id")  && a.getAttribute("title")) {
      a.disabled = true; 
      name = a.getAttribute("id"); 
      name = name.replace(rep, ""); 
      if(name == id) a.disabled = false;
    }
  }
}

function getActiveStyleSheet(title) {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
  	if (a.getAttribute("title") && a.getAttribute("id"))
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title").indexOf(title) != -1 && a.getAttribute("id") && a.getAttribute("title") && !a.disabled) return a.getAttribute("id");
  }
  return null;
}

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("id") && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

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 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;
}

window.onload = function(e) {
  var cookie = readCookie("styleColour");
  var styleColour = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet('colour',styleColour);
  
  var cookie = readCookie("styleText");
  var styleText = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet('text',styleText);
  
}

window.onunload = function(e) {
  var Stylecolour = getActiveStyleSheet('colour');
  createCookie("styleColour", Stylecolour, 365);
  
  var styleText = getActiveStyleSheet('text');
  createCookie("styleText", styleText, 365);
}

var cookie = readCookie("styleColour");
var styleColour = cookie ? cookie : getPreferredStyleSheet();
 setActiveStyleSheet('colour',styleColour);

var cookie = readCookie("styleText");
var styleText = cookie ? cookie : getPreferredStyleSheet();
 setActiveStyleSheet('text',styleText);