/*
changecss.js
Based on Paul Sowden's Alternate Style script (http://www.alistapart.com/articles/alternate/).
Certain changes have been made by our ThinkQuest team - 'Outsourced Minds'
*/

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


/*
window.onload = function(e) {
  var cookie = getCookieVal("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}*/

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

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  newCookie("style", title, 1);
}