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;
    }
  }
  setTextSelector(title);
}

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 setTextSelector(title) {
 if(document.textsmall) {
  if (title == "default") {
	    document.textsmall.src="img/text-s-test-r.gif"
	    document.textmed.src="img/text-m-test.gif"
	    document.textlarge.src="img/text-l-test.gif"
  }
  if (title == "medium") {
    document.textsmall.src="img/text-s-test.gif"
    document.textmed.src="img/text-m-test-r.gif"
    document.textlarge.src="img/text-l-test.gif"
  }
  if (title == "large") {
    document.textsmall.src="img/text-s-test.gif"
    document.textmed.src="img/text-m-test.gif"
    document.textlarge.src="img/text-l-test-r.gif"
  }
 }
 createCookie("style", title, 365);
}

function setTextSizerImage() {
var style = readCookie("style");
setTextSelector(style);
}


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 : "default"/*getPreferredStyleSheet()*/;
  setActiveStyleSheet(title);
}

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

/************************ PAGE-LEVEL "RUN NOW" ********************************/
// set active style now, before content renders
var cookie = readCookie("style");
var title = cookie ? cookie : "default"/*getPreferredStyleSheet()*/;
setActiveStyleSheet(title);