/azu/ - Azumanga

if (active_page == 'thread' || active_page == 'index') {
$(document).ready(function(){
function arrayRemove(a, v) { a.splice(a.indexOf(v) == -1 ? a.length : a.indexOf(v), 1); }

var idshighlighted = [];

function getPostsById(id){
return $(".poster_id").filter(function(i){
return $(this).text() == id;
});
}

function getMasterPosts(parents){
if(!parents.hasClass("post")) return;

var toRet = [];

$(parents).each(function(){
if($(this).hasClass("post"))
toRet.push($(this));
});

return toRet;
}

var id_highlighter = function(){
var id = $(this).text();

if($.inArray(id, idshighlighted) !== -1){
arrayRemove(idshighlighted, id);

$(getMasterPosts(getPostsById(id).parents())).each(function(i){
$(this).removeClass("highlighted");
});
}else{
idshighlighted.push(id);

$(getMasterPosts(getPostsById(id).parents())).each(function(i){
$(this).addClass("highlighted");
});
}
}

$(".poster_id").on('click', id_highlighter);

$(document).on('new_post', function(e, post) {
$(post).find('.poster_id').on('click', id_highlighter);
});
});
}


you will need to write html for this too