function setActiveStyleSheet(title) {

  if (DOMok() == true) {
    var i, a;
    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;
}

function createCookie(name, value, days) {

  var expires; 
  if (days) {
    var date = new Date();
    date.setTime(date.getTime() + (days*24*60*60*1000));
    expires = "; expires="+date.toGMTString();
  }
  else
    expires = "";
  document.cookie = name+"="+value+expires+"; domain=bluesnews.com; 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);
}

function DOMok() {

  var bGTG;
  if (document.getElementById) {
    bGTG = true;
  } else {
    bGTG = false;
  }
  return bGTG;
}

if (DOMok() == true) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}