Simple JavaScript ‘Frame Busting’ Code

Ref: http://amiworks.co.in/talk/simple-javascript-%E2%80%98frame-busting%E2%8...

Here is a quick JavaScript  code that you can use if you want to make
sure that no one should be able to show your website in an IFrame.

<script type="text/javascript">
if (top !=self) {
  top.location=self.location;
}
</script>

Just put this code in head section of your html page, and it will
ensure that your page always get’s displayed outside the frames.