Copie o código abaixo e insira no lugar que preferir no seu site.
<script language="JavaScript"><!-- function setjs() { if(navigator.product == 'Gecko') { document.loginform["interface"].value = 'mozilla'; }else if(navigator.appName == 'Microsoft Internet Explorer' && navigator.userAgent.indexOf("Mac_PowerPC") > 0) { document.loginform["interface"].value = 'konqueror'; }else if(navigator.appName == 'Microsoft Internet Explorer' && document.getElementById && document.getElementById('ietest').innerHTML) { document.loginform["interface"].value = 'ie'; }else if(navigator.appName == 'Konqueror') { document.loginform["interface"].value = 'konqueror'; }else if(window.opera) { document.loginform["interface"].value = 'opera'; }} //--> </script> <form method="post" target="_blank" action="http://chat.redenorte.net/cgi-bin/irc.cgi" name="loginform" onsubmit="setjs();return true;" id="ietest"> <input type="hidden" name="interface" value="nonjs"> <input type="hidden" name="Server" value="irc.meudominio.com.br"> <input type="text" size="12" name="Nickname" value="nick"> <select name="Channel" class="BOX" id="select2"> <option value="#Canal1">#Canal1</option> <option value="#Canal2">#Canal2</option> <option value="#Canal3">#Canal3</option> </select> <input type="submit" value="Conectar"> </form>