Possible approach to platform specific handling for ringz app.

Ringz.js

console && console.log('this is ringz!');

var RingzApp = function(rPlatform) {
	var vPlatform = rPlatform || 'web',
		vClickerConfig,
		vRingzEventHandler;

	/***
	 * Platform specific Clicker/Event config
	 **/
	vClickerConfig = {
		'web' : {
			'37' : 'left',
			'38' : 'up',
			'39' : 'right',
			'40' : 'down',
			'13' : 'enter',
			'27' : 'escape'
		}
	};

	/***
	 * EventHandler Class
	 **/
	vRingzEventHandler = observable.extend({
		config   : null,
		init : function (rPlatform)
		{
			this._super();
			this.config = vClickerConfig[rPlatform] || vClickerConfig['web'];
		}
	});

	/***
	 * TODO: create platform specific controller objects i.e one 
	 *       for web, tablet, remote control (tvs etc). Return
	 *       an instance of that object along with the ringzEventHandler.
	 **/
	
	return {
		ringzEventHandler : new vRingzEventHandler(rPlatform)
	}
};

if (!window.ringzapp)
{
	$(document).ready(function() {

		var vHash       = document.location.hash.substr(1),
			vParsedHash = (function() {
				var vResult = {};
				$.each(vHash.split('&'), function(k, v) {
					var vKVPair = v.split('=');
					vResult[vKVPair[0]] = vKVPair[1];
				});
				return vResult;
	 		})(),
			vPlatform = (vParsedHash && vParsedHash['platform']) || 'web',
			vRingzEventHandler;

		console.debug('vPlatform', vPlatform);

		ringzapp = new RingzApp(vPlatform);

		/***
		 * Observe events being fired, and call the corresponding 'on' + event function(s).
		 **/
		if (vRingzEventHandler = ringzapp.ringzEventHandler) {
			$.each(vRingzEventHandler.config, function(k, v) {
				vRingzEventHandler.observe(v, function() { console.debug('on' + v.toProperCase()); });
			});
		}

		// TODO: add support for keypress when press and hold is required.
		// $(document).keypress(function(rEvt) {});

		/***
		 * Listen for key events. 
		 * If they correspond with current platform's config, fire an event.
		 **/
		$(document).keyup(function(rEvt) {
			var vKeyCodeStr    = rEvt.keyCode.toString(),
				vClickerConfig = vRingzEventHandler.config,
				vClickerEvent  = vClickerConfig[vKeyCodeStr];

			vClickerEvent && console.debug('Event captured', vClickerEvent);
			vClickerEvent && vRingzEventHandler.fire(vClickerEvent);
		});
	});
}