if (window.location.search.indexOf("client=ios") !== -1) {
    console.log('=> Using iOSClient.js');

    var Client = Class.extend({
        initialize: function() {
            this.commands = [];
            this.timer = new Timer($.proxy(this._sendNotifications, this), 133);
            this.timer.start();
        },
        // Called by the web application to send values to the client.
        //
        //     @param {Object} obj - a set of key/value parameters to send to client
        notify: function(obj) {
            if (top.location === self.location) {
                this.commands.push(obj);
            }
        },
        // Called by the client to set a value or trigger an action in the web page.
        //
        //     @param {String} name
        //     @param {Object} value (optional)
        callback: function(name, value) {
            Application.onClientCallback(name, value);
        },
        _sendNotifications: function() {
            // Do nothing if array is empty.
            if (this.commands.length === 0) return;

            // Send the first command in the array.
            this._createUrlForClientInterception("client_notify", this.commands[0]);
            this.commands.shift();
        },
        _createUrlForClientInterception: function(prefix, obj) {
            this._initClientTransportIfNecessary(prefix);
            for (var prop in obj) {
                if (typeof obj[prop] !== 'function') {
                    var input = document.createElement("input");
                    input.type = "hidden";
                    input.name = prop;
                    // these do not need to be encoded, because the form does this for us.
                    input.value = obj[prop];
                    this.form.appendChild(input);
                }
            }
            // prevent embedded iframe from being source of further events.
            if (top.location === self.location) {
                this.form.submit();
            }
        },
        _initClientTransportIfNecessary: function(prefix) {
            if (this.iframe === null || this.iframe === undefined) {
                this.iframe = document.createElement("iframe");
                this.iframe.name = "postit";
                this.iframe.setAttribute("style", "position:absolute; left:-1000px; top:-100px;");
                this.iframe.width = this.iframe.height = 10;
                document.body.appendChild(this.iframe);

                this.form = document.createElement("form");
                this.form.target = "postit";
                this.form.style.visibility = "hidden";
                this.form.style.position = "absolute";
                document.body.appendChild(this.form);
            }
            this.form.action = prefix;
            this.form.innerHTML = "";
        }
    });

    // Singleton
    Client = new Client();
}