Kendo UI SPA + Router: SHOW ME TEH KITTEHS!

Kitteh Gallereh Router and selecting an image

HTML

<link rel="stylesheet" href="http://cdn.kendostatic.com/2013.3.1119/styles/kendo.common.min.css">
<link rel="stylesheet" href="http://cdn.kendostatic.com/2013.3.1119/styles/kendo.default.min.css">
<script src="http://cdn.kendostatic.com/2013.3.1119/js/kendo.all.min.js"></script>
    
<a href="#/case3/1?a=1000">Works when id is given</a>
<br>
<br>
    
<a href="#/case3?a=1000">Doesnt work when id is not given</a>
    
<br>
<br>
    
    
    
<div id="output"></div>

JavaScript

var router = new kendo.Router();

    router.route("/case3(/:id)", function (id, params) {
        var message = "id = " + id + "<br>";
        if (params && params.a) {
            message += "a = " + params.a + "<br>";
        } else {
            message += "params.a not defined";
        }
        $("#output").html(message);
    });


    router.start();