Enhance Outlook Web App: Fixes XML request bodies. Allows refreshing or opening Outlook in new tabs. Fixes sender CSS.

Enhance Outlook Web App 1.00.js

// ==UserScript==
// @name Enhance Outlook Web App
// @version 1.00
// @description Fixes XML request bodies. Allows refreshing or opening Outlook in new tabs. Fixes sender CSS.
// @author XP1 (https://github.com/XP1/)
// @namespace https://gist.github.com/2699143/
// @include http*://outlook.com/*
// @include http*://*.outlook.com/*
// ==/UserScript==

/*jslint browser: true, vars: true, white: true, maxerr: 50, indent: 4 */
(function (console, window)
{
    "use strict";

    var userScript =
    {
        name: "Enhance Outlook Web App"
    };

    function removeEventListenerAfterFiring(numberOfTimes, callback)
    {
        var remaining = numberOfTimes;
        return function listener(event)
        {
            remaining -= 1;

            if (remaining <= 0)
            {
                var target = event.target;
                var type = event.type;
                target.removeEventListener(type, listener, false);
                target.removeEventListener(type, listener, true);
            }

            callback();
        };
    }

    var handleException = function handleException(theFunction)
    {
        try
        {
            theFunction();
        }
        catch (exception)
        {
            console.error("[" + userScript.name + "]: Exception: " + exception + "\n\nStack:\n" + exception.stack + "\n\nStacktrace:\n" + exception.stacktrace);
        }
    };

    function deleteFunctions(object)
    {
        var name = null;
        for (name in object)
        {
            if (object.hasOwnProperty(name))
            {
                if (typeof object[name] === "function")
                {
                    delete object[name];
                }
            }
        }
    }

    /**
     * Removes XML declarations from request bodies. Outlook servers reject request bodies with XML declarations.
     * Prevents the following error when sending requests:
     *
     *     An unexpected error occurred and your request couldn't be handled.
     */
    function removeXmlDeclaration()
    {
        var XmlDocumentPrototype = window.Owa.Dom.XmlDocument.prototype;
        var realGet_Xml = XmlDocumentPrototype.get_Xml;

        XmlDocumentPrototype.get_Xml = function get_Xml()
        {
            return realGet_Xml.call(this).replace(/^<\?xml\s+version\s*=\s*(["'])[^\1]+\1[^?]*\?>/i, "");
        };
    }

    /**
     * Moves the `Cky` constructor functions to its prototype and disables the cookie-checking `IsLdd` function.
     * Prevents the following error when refreshing or opening Outlook in new tabs.
     *
     *     There was a problem opening your mailbox. You may have already signed in to Outlook Web App on a different browser tab. If so, close this tab and return to the other tab. If that doesn't work, you can try:
     *         - Closing your browser window and signing in again.
     *         - Deleting cookies from your browser and signing in again.
     *
     * The `createMasterWindowCookies` function uses the `Cky` method `IsLdd` to check the master window cookies and display the error.
     */
    function disableCookieCheck()
    {
        var RealCky = window.Cky;

        function Cky()
        {
            RealCky.apply(this, arguments);
            deleteFunctions(this);
            return this;
        }

        Cky.prototype = new RealCky();

        Cky.prototype.IsLdd = function Cky$IsLdd()
        {
            return false;
        };

        window.Cky = Cky;
    }

    function fixSenderCss()
    {
        var css = "#divSn span, #divSender span { display: inline-block; }";

        var document = window.document;
        var head = document.getElementsByTagName("head")[0];
        var style = document.createElement("style");
        style.appendChild(document.createTextNode(css));
        head.appendChild(style);
    }

    function initialize()
    {
        var functions = [removeXmlDeclaration, disableCookieCheck, fixSenderCss];

        var i = null;
        var length = functions.length;
        for (i = 0; i < length; i += 1)
        {
            handleException(functions[i]);
        }
    }

    window.addEventListener("DOMContentLoaded", removeEventListenerAfterFiring(1, initialize), false);
}(this.console, this));

I posted this user JS in this thread:

Support Outlook Web App premium:
http://my.opera.com/community/forums/topic.dml?id=1316492

Related thread:

Outlook Web App Light:
http://my.opera.com/community/forums/topic.dml?id=949932