<script language="JavaScript">
    mod="меняешь на своё"

    str=document.URL
    page=str.substring(str.lastIndexOf('/')+1)
    if( page=="" || page=="index.php" ) {
      arr=document.getElementsByTagName("span")
      i=0
      while(arr[i])
      {
        if(arr[i].className=="modlist")
            arr[i].innerHTML = "(" + mod + arr[i].innerHTML.substring(11)
        i++
      }
    }
    </script>

<script type="text/javascript">
var logo="<img src='http://mybb.ru/f/collection/0211.gif'>"
var arr=document.getElementsByTagName("div")
i=0
while(arr[i] ){
if(arr[i].className=="category"){
name=arr[i].innerHTML
name=name.substring(48)
arr[i].innerHTML="<h2><div class=\"catleft\"><!-- --></div><span> "+logo+" &ensp;"+name+""
}
i++
}
</script>