<script type="text/javascript" language="javascript">    
e=document.getElementsByTagName("TD");    
for(k=15; k<e.length;k++) {    
if(e[k].className=='posttdMessage') {    
s=e[k].innerHTML;    
while (s.indexOf('[skype]') != -1){    
s=s.replace('[skype]','<img src="http://mystatus.skype.com/smallicon/'); s=s.replace('[/skype]','" style="border: none;" width="16" height="16" alt="Статус skype пользователя $USERNAME$" />');    
e[k].innerHTML=s;    
}    
} }    
</script>

<input type="button" value="Мой Skype статус" onclick="simpletag('skype','','','message',''); return true;" class="codeButtons" />