Enhance Google Search: Adds a keyboard shortcut that opens the first search result in a Google Search.

Enhance Google Search 1.00.js

// ==UserScript==
// @name Enhance Google Search
// @version 1.00
// @description Adds a keyboard shortcut that opens the first search result in a Google Search.
// @author XP1 (https://github.com/XP1/)
// @namespace https://gist.github.com/1124807/
// @include http*://google.*/search?*
// @include http*://*.google.*/search?*
// ==/UserScript==

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

    if (window.self !== topWindow)
    {
        return;
    }

    var topWindowDocument = topWindow.document;

    var options =
    {
        shortcutKeys:
        {
            shiftKey: true,
            ctrlKey: true,
            altKey: false,
            keyCode: 70 // F
        },
        openInNewTab: true,
        openInNewBackgroundTab: false
    };

    var openFirstSearchResult = function (event)
    {
        var shortcutKeys = options.shortcutKeys;
        var pressedShortcutKeys = ((event.shiftKey === shortcutKeys.shiftKey) && (event.ctrlKey === shortcutKeys.ctrlKey) && (event.altKey === shortcutKeys.altKey) && (event.keyCode === shortcutKeys.keyCode));

        if (pressedShortcutKeys)
        {
            event.preventDefault();
            event.stopPropagation();

            try
            {
                var firstResult = topWindowDocument.querySelector("a.l").href;
                if (options.openInNewTab)
                {
                    window.open(firstResult);

                    if (options.openInNewBackgroundTab)
                    {
                        topWindow.focus();
                    }
                }
                else
                {
                    window.location.assign(firstResult);
                }
            }
            catch (exception)
            {
                //window.opera.postError(exception);
            }
        }
    };

    topWindow.addEventListener("keydown", openFirstSearchResult, false);
}(window.top));

I posted this user JS in this thread:

first google result key shortcut:
http://my.opera.com/community/forums/findpost.pl?id=10039182

PROTIP: CTRL + SHIFT + F.