nulchat.html

<!DOCTYPE html>
<html lang="en">
<head>
<title>nulchat</title>
<style type="text/css">
	html, body {
    		background: #f3f3f3;
    		font-family: "Lucida Grande", Helvetica, Arial, sans-serif;
    		font-size: 15px;
     	}

	input {
		 border: 1px solid #ccc;
		 border-radius:5px;
	}

        #text-input {width: 250px;}
</style>

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js"></script>
<script src="/nowjs/now.js"></script>

<script>

    function RequestPermission (callback)
    {
	if (!window.webkitNotifications) {
        	alert('Sorry, your browser does not support desktop notifications. Try Google Chrome.');
		return;
    	}

	if ($('#notify').attr('checked') && window.webkitNotifications.checkPermission() > 0) {
        	 window.webkitNotifications.requestPermission();
	}   
    }

    function notify (chatMessage)
    {       
        if (window.webkitNotifications.checkPermission() == 0) {
                var icon  = '';
                var title = 'nulchat';
                var body   =  chatMessage;
 
        
                var popup = window.webkitNotifications.createNotification(icon, title, body);
                popup.show();
                setTimeout(function(){
                popup.cancel();
                }, '4000');

	}
    }

$(document).ready(function(){
  now.name = prompt("What's your name?", "");
  var myName = now.name;
  now.receiveMessage = function(name, message){
    $("#messages").append("<br>" + name + ": " + message);

	if ($('#notify').attr('checked') && myName != name && window.webkitNotifications) {
     		notify(name + " says:" + message.substring(0,50));
	}	
  }

  $("#send-button").click(function(){
    now.distributeMessage($("#text-input").val());
    $("#text-input").val("");
  });


  $('#text-input').keypress(function(e){
      if(e.which == 13){
         now.distributeMessage($("#text-input").val());
         $("#text-input").val("");
       }
   });

});
</script>
</head>

<body>
<div id="messages"></div>
<input type="text" id="text-input"/>
<input type="button" value="Send" id="send-button" /> <br/>
<input type="checkbox" id="notify" onclick="RequestPermission()" /> notify me (chrome only)
<br/>  
<br/>
I've checked this example source into here...tweak it and I'll redeploy:
<br/>
<a href="https://github.com/jacobheric/nulchat" target="_blank">https://github.com/jacobheric/nulchat</a>
<br/>
<br/>
written with:  <a href="http://nowjs.com/" target="_blank">http://nowjs.com/</a>
<br/>
runs on: <a href="http://nodejs.org/" target="_blank">http://nodejs.org/</a>
<br/>
<br/>

</body>
</html>