<script type="text/javascript">    
e=document.getElementsByTagName("TD");    
for(k=0;k<e.length;k++) {    
if(e[k].className=='posttdMessage') {    
s=e[k].innerHTML;    
while (s.indexOf('[b lue]') != -1) {    
s=s.replace('[b lue]','<table width="100%" border="0" cellspacing="0" cellpadding="5" style="background-color:161618; border-top:1px dotted #268abf; border-right:1px dotted #268abf; border-bottom:1px dotted #268abf; border-left:1px dotted #268abf;"><tr><td style="width:15px; height:30px; background-image: url(http://www.game-home.ru/admin_soob/blue2.png); background-repeat:no-repeat; background-position:0.5px 0.5px;"> </td><td><font size="1.5" face="Visitor_Rus" style="color: 268abf;">'); s=s.replace('[/b lue]','</font></td></tr></table>');    
e[k].innerHTML=s;}}}    
</script>

<input type="button" value="Синяя Таблица" onclick="simpletag('blue','','','message',''); return false;" class="codeButtons" title="Вставить Синию Таблицу" name="blue">