$(document).ready(function() {

   /* no autocomplete */
   $(":text").attr("autocomplete", "off");

   /* no frame */
   if (window.top != window.self) {
      if (window.NOFRAME) alert(window.NOFRAME);
      window.top.location.href = window.self.location.href;
   }

   /* history back */
   if (window.REFERER) {
      //todo
   }
});