/***********************************************
* Styleswitcher script by Paul Sowden
* http://www.alistapart.com/articles/alternate
***********************************************/
function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}

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

// The following code provides functionality to remember user preferred stylesheets upon return site visits
// We're not currenty using this as we only switch to provide a print preview
// This was left in as we may develop user-selectable alternate stylsheets for future requirements

// 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("style");
//  var title = cookie ? cookie : getPreferredStyleSheet();
//  setActiveStyleSheet(title);
//}

//window.onunload = function(e) {
//  var title = getActiveStyleSheet();
//  createCookie("style", title, 365);
//}

//var cookie = readCookie("style");
//var title = cookie ? cookie : getPreferredStyleSheet();
//setActiveStyleSheet(title);