router.js

var router = (function() {
    var self = {}
    var usehistory = window && window.history.pushState ? 1 : 0;

    self.routes = {}

    self.go = function(url,title,state){
        self.push(url,title,state)
        self.execute(url)
    }

    self.push = function(url,title,state){
        if(usehistory && url != location.pathname){
            if(title && document) document.title = title
            history.pushState(state || {}, title || '', url)
        }
    }

    self.route = function(url, controller) {  
    	var match = self.trim(url)
        self.routes[match] = {
        	url: url,
        	controller: controller
       };
    }    

    self.process = function(){
        var url   = location.hash.slice(1) || location.pathname || '/'
    	self.execute(url)
    }

    self.execute = function(url){
        var route = self.routes[self.trim(url)]
    	if(url[0] == '/') url = url.slice(1)

        if(route && route.controller) {
        	// (collection, id, action)
        	route.controller.apply(null, url.split('/'))
        }
    }

    self.trim = function(url){
    	if(url[0] == '/') url = url.slice(1)
    	return url.split('/')[0]
    }

    // Listen on history change:
    window.addEventListener('popstate', self.process);  

    // Listen on hash change:
    window.addEventListener('hashchange', self.process);  
    
    // Listen on page load:
    window.addEventListener('load', self.process);  

    return self
})()

function routes(map) {  
	for(var i in map){
		router.route((i[0] != '/' ? '/' : '') + i,map[i])
	}
}

function route(url, controller) {  
    router.route(url, controller)
}

// support CommonJS
if (typeof exports === 'object')
  module.exports = router

// support AMD
else if (typeof define === 'function' && define.amd)
  define(function() { return router })