function setCurrentStyleSheet(cssFileName) 
{
    var cssFilePathName;

    cssFilePathName = "/assets/css/" + cssFileName + ".css";

	document.getElementById("ctl00_screenCSS").href = cssFilePathName;
    
    createCookie("style", cssFileName, 365);
}

function getCurrentStyleSheet() 
{
    var cssFilePathName;
    var cssFileName;

    cssFilePathName = document.getElementById("ctl00_screenCSS").href;
    
    switch (cssFilePathName)
    {
      case "/assets/css/textsize1.css":
        cssFileName = "textsize1"
        break;

      case "/assets/css/textsize2.css":
        cssFileName = "textsize2"
        break;

      case "/assets/css/textsize3.css":
        cssFileName = "textsize3"
        break;
        
   
      default:
        cssFileName = "default";
    }
    return cssFileName    
}

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 cssFileName = cookie ? cookie : getCurrentStyleSheet();
  setCurrentStyleSheet(cssFileName);
}