<script>
function HideInfo(id,but){
if(but.value=="открыть"){
  but.value = "закрыть";document.getElementById(id).style.display = ""}
else{
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  return false}

d = document.getElementsByTagName("div")

for (i=0;d[i]; i++){
if (d[i].className.indexOf("post-author")!=-1){t = d[i].innerHTML
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    d[i].innerHTML = t.substring(0,j)+"<input type='Submit' onClick=\"return HideInfo('info"+i+"',this)\" value='открыть'><br><div id='info"+i+"' style='display:none'>"+t.substring(j,t.length)+"</div>"}}
</script>

<script type="text/javascript">
defaultPict = "http://upforme.ru/uploads/0000/12/13/61-1.png"


var arr=document.getElementsByTagName("ul")
i=1
while(arr[++i]){
str=arr[i].innerHTML
if(str.indexOf("pa-avatar")==-1) {
q=str.toLowerCase()
if((pos=q.indexOf("<li class=pa-from>"))!=-1 || (pos=q.indexOf("<li class=\"pa-from\">"))!=-1 || (pos=q.indexOf("<li class=pa-reg>"))!=-1 || (pos=q.indexOf("<li class=\"pa-reg\">"))!=-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>