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<!doctype html>

<html lang="en">

<head>
	<meta charset="utf-8">
	<style>
		#container { width: 500px; margin: 0 auto; text-align: center; }
		#crapcatcher { border: 2px solid black; min-height: 300px; border-radius: 10px; padding: 10px; }
	</style>
</head>

<body>
	<div id="container">
		<h2>Crap Goes Here</h2>
		<div id="crapcatcher"></div>
		<button onclick="$('#crapcatcher').empty()">Clear the Catcher</button>
	</div>
</body>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>

<script>
/* jQuery Tiny Pub/Sub - v0.7 - 10/27/2011
 * http://benalman.com/
 * Copyright (c) 2011 "Cowboy" Ben Alman; Licensed MIT, GPL */
(function($) {

  var o = $({});

  $.subscribe = function() {
    o.on.apply(o, arguments);
  };

  $.unsubscribe = function() {
    o.off.apply(o, arguments);
  };

  $.publish = function() {
    o.trigger.apply(o, arguments);
  };

}(jQuery));


// Examples
// $.subscribe("/some/topic", handler1);
// $.publish("/some/topic", [ "a", "b", "c" ]);
// $.unsubscribe("/some/topic", handler1);

function handler1(e) {
	$("#crapcatcher").append("Hello from Hander 1<br />");
}

function handler2(e, a) {
	$("#crapcatcher").append("Hello from Hander 2 - " + a + "<br />");
}

function handler3(e, a, b) {
	$("#crapcatcher").append("Hello from Hander 3 - " + a + ":" + b + "<br />");
}



</script>

</html>

Resources

Cowboy Ben Alman's jQuery PubSub