This gives a very very simple security check for a password.

Body Code:

PASSWORD IS "secret"!
<script type=text/javascript>
if (prompt("password:","")!="secret") {
  document.location="http://www.js-examples.com/js/";
} else {
document.write(' ****your html page ****');
document.write(' **** all your page ');  
}
</script>
<noscript>
Page Unavailable!
</noscript>

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