function changeStyle() {
  identity=document.getElementById("content-content");

  if (identity.className=="klein") {
    identity.className="groot";
    document.cookie = "activestyle=groot;path=/";
  }
  else if(identity.className=="groot") {
    identity.className="groter";
    document.cookie = "activestyle=groter;path=/";	
  }
  else {
    identity.className="klein";
    document.cookie = "activestyle=klein;path=/";
  }
}

function readCookie(cookieName) {
  cookie_array = document.cookie.split ("; ");
  for (x=0; x < cookie_array.length; x++) {
      cookieParts_array = cookie_array[x].split("=");
      if (cookieParts_array[0] == cookieName)
        return cookieParts_array[1];
    }
  return null;
} 

function startStyle() {
  identity=document.getElementById("content-content");

  cook=readCookie("activestyle");
  
  if(cook=="groter") {
    identity.className="groter";
  }
  else if(cook=="groot") {
    identity.className="groot";
  }
  else {
    identity.className="klein";
  }
}