// from http://www.alistapart.com/articles/alternate/
function setActiveStyleSheet(title) {
  var i, a, main, frame;
  frame = top.center;
  
  for(i=0; (a = frame.menu.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;
    }
  }
  for(i=0; (a = frame.body.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, frame;
  frame = top.center;
  
  for(i=0; (a = frame.menu.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, frame;
  frame = top.center;
  
  for(i=0; (a = frame.menu.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 addEvent(window, "unload") {
  //if (IEEEFontStyle != getActiveStyleSheet()) {
    //setCookie("IEEEFontStyle", getActiveStyleSheet(), daysInFuture(365));
  //}
//});

var IEEEFontStyle = getCookie("IEEEFontStyle");
setActiveStyleSheet(IEEEFontStyle ? IEEEFontStyle : getPreferredStyleSheet());