How to overwrite clipboard every five seconds?

Question

I'm trying to prevent users to copy some sensitive data from my internal portal. I have disabled copy paste everything, but I cant disable print screen so I decided to empty clipboard every five seconds so that contents copied will be useless but cant use zeroclipboard.swf without a button trigger

Here is the code

<script>
    setInterval ("doSomething()", 1000);
    function doSomething()
      { 
      document.getElementById("btn_copy").click();
      }

$(document).ready(function(){
      $(".cop").zclip({
       path:"ZeroClipboard.swf",
       copy:"This is arasu"
    });
});

If I click the button it works, but it isn't working, when it is triggered with coding

Thanks in advance.

Answer 1

Screw that. I didn't see that it was in html.

However you know that you are just increasing the difficulty of taking snapshots since programs like snagit don't need the clipboard to take screenshots.