SMF For Free Support Forum

Well I got this from another SMF site owner:

<script type='text/javascript'>
/*
[SMF] Users Key
Created by iFusion
*/
var userKey = new Array();
userKey[0] = [ "Admin" , "Gold" ];
userKey[1] = [ "Mods" , "Orange" ];
userKey[2] = [ "Members" , "Blue" ];
userKey[3] = [ "Guests" , "Grey" ];

var uKey = "";
for(i=0;i<userKey.length;i++){
uKey += "[ <span style='color: " + userKey[1] + "'>" + userKey[0] + "</span> ] ";
}

var iTD = document.getElementsByTagName('TD');
for(i=iTD.length-1;i>0;i--){
if(iTD.className=="windowbg2" && iTD.firstChild.tagName == "A" && iTD.firstChild.href.match(/action=who/i) != null){
  iTD.getElementsByTagName('SPAN')[0].innerHTML += "
<strong>Users Key:</strong> " + uKey; break;
}}
</script>


But I don't know where to put it   
any help?

yes it goes into your footers....
http://www.smfsupport.com/support/smf-for-free-codes/users-key-in-whos-online.0.html