Anatomy of an online ad: initial response

original_yahoo_response.html

<!-- Leaderboard slot on Yahoo!'s health network -->
<div id="yahoohealth-n-leaderboard-ad" style="border:0;margin-top:0;">
  <div style="margin-bottom:9px;text-align:center">
    <!-- Ad unit delivery script if scripting is available -->
    <script language="JavaScript" type="text/javascript" src="http://us.adserver.yahoo.com/a?f=96843138&amp;p=health&amp;l=N&amp;c=r&amp;rs=cnp:healthline&amp;at=hlids%3Dx%26hlk1%3D8234384%26hlk2%3D8317112%26hlkwa%3D2790905%20refurl%3D%22%22">
    </script>
    <center>
      <!-- Yahoo 1x1 tracking pixel delivery script -->
      <script language="JavaScript" type="text/javascript" src="http://us.adserver.yahoo.com/a?f=96843138&amp;p=health&amp;l=FSRVY&amp;c=sr">
      </script>
    </center>
    <noscript>
      <!-- Ad unit delivery as HTML if scripting is not available -->
      <iframe frameborder="0" marginwidth="0" marginheight="0" scrolling="no" width="728" height="106" src="http://us.adserver.yahoo.com/a?f=96843138&amp;p=health&amp;l=N&amp;c=h&amp;rs=cnp:healthline&amp;at=hlids%3Dx%26hlk1%3D8234384%26hlk2%3D8317112%26hlkwa%3D2790905%20refurl%3D%22%22">
      </iframe>
    </noscript>
  </div>
</div>