I'm using Fiddler (web debugging tool) and the below code is JScript .NET, which is basically a .NET version of Javascript.



Code:
if (oSession.HostnameIs("www.youtube.com") && oSession.oResponse.headers.ExistsAndContains("Content-Type","text/html")) // oSession is a Fiddler object session
    {    
          oSession.utilDecodeResponse();   // Remove any compression or chunking
          oSession.utilReplaceInResponse('<b>','<u>');  // Search and replace in HTML
        }
How do I replace youtube video player with this message?

HTML Code:
<div id="player-unavailable" class="  player-width player-height    player-unavailable ">
                    <div class="icon meh"></div>
      <div class="content">
        <h1 id="unavailable-message" class="message">
                This video is no longer available because of inappropriate content.
        </h1>
        <div id="unavailable-submessage" class="submessage">
    Sorry about that.
        </div>
      </div>


    </div>
Thank you