Good idea, it'd be nice to have the node id easily accessible for each reply.
Put this snippet in your free nodelet - it'll add "#node_id" after the reply title (ie #581764 for this node).
<script language="javascript"><!--
function add_node_ids() {
var trs = document.getElementsByTagName('tr');
var i;
for ( i = 0; i < trs.length; i++ ) {
if ( trs[i].className == 'reply' ){
var anch = trs[i].getElementsByTagName( 'a' );
var id = anch[0].href.match( /\d+$/ );
var txt = document.createTextNode( " #" + id );
//or for [id://nnnnnn] style,
//var txt = document.createTextNode( " [id://" + id + "]" );
anch[0].parentNode.insertBefore( txt, anch[0].nextSibling
+);
}
}
}
add_node_ids();
</script><!-- end add_node_ids -->
Update: Tested on Firefox 1.507 & IE 6
Update 2: Only showed ids for new replies. Fixed to show id's for all replies. Added [id://nnnnnn].