<script type="text/javascript">
    defaultPict = "http://forumupload.ru/uploads/0002/25/06/1608-1.jpg"

    var arr=document.getElementsByTagName("ul")
    for(i=3;arr[i];i+=2) {
    str=arr[i].innerHTML
    if(str.indexOf("pa-avatar")==-1) {
        if((pos=str.indexOf("<LI class=pa-from>"))==-1)
        pos=str.indexOf("<LI class=\"pa-from\">")
        if(pos!=-1) {
        nstr =str.substring(0,pos)
        nstr+="<li class=\"pa-avatar item2\"><img src="+ defaultPict +" alt=\"Аватар\" /></li>"
        nstr+=str.substring(pos)
        arr[i].innerHTML=nstr
        }
    }
    }
    </script>

<script type="text/javascript">
    defaultPict = "http://forumupload.ru/uploads/0002/25/06/1608-1.jpg"

    var arr=document.getElementsByTagName("ul")
    for(i=3;arr[i];i+=2) {
    str=arr[i].innerHTML
    if(str.indexOf("pa-avatar")==-1) {
        if((pos=str.indexOf("<LI class=pa-reg>"))==-1)
        pos=str.indexOf("<LI class=\"pa-reg\">")
        if(pos!=-1) {
        nstr =str.substring(0,pos)
        nstr+="<li class=\"pa-avatar item2\"><img src="+ defaultPict +" alt=\"Аватар\" /></li>"
        nstr+=str.substring(pos)
        arr[i].innerHTML=nstr
        }
    }
    }
    </script>