grease monkey script to fix google search tabs order

// ==UserScript==
// @name        Google Fixed Tab Order
// @namespace   google.com
// @include     https://www.google.com/search?*
// @include     https://www.google.com/webhp?*
// @include     https://www.google.ca/search?*
// @include     https://www.google.ca/webhp?*
// @version     2.0
// @grant       none
// ==/UserScript==

(function ()
{
    var order = ["Web", "Images", "Videos", "News", "Maps", "Books", "Apps", "Shopping", "Flights"];

    function observerEnable()
    {
        observer.observe(document.querySelector("#main"), { childList: true, subtree: true });
    }
    function observerDisable()
    {
        observer.disconnect();
    }
    var observer = new MutationObserver(function(mutations)
    {
        observerDisable();
        fixTabs();
        observerEnable();
    });
    observerEnable();

    function fixTabs()
    {
        var parent = document.querySelector("#hdtb_msb");
        if (parent == null)
            return;

        var tabs = parent.querySelectorAll(".hdtb_mitem");

        var more = document.querySelector("#hdtb_more");
        var tools = document.querySelector("#hdtb_tls");

        while (parent.firstChild)
            parent.removeChild(parent.firstChild);

        for (var i = 0; i < order.length; i++)
            for (var t = 0; t < tabs.length; t++)
                if (order[i] == tabs[t].textContent)
                    parent.appendChild(tabs[t]);

        parent.appendChild(tools);
    }
    fixTabs();
})();