V2EX (background) reader

V2EXreader.js

// ==UserScript==
// @name       V2EX reader
// @namespace  http://github.com/quietshu
// @version    0.1
// @description  enter something useful
// @match      http://www.v2ex.com/
// @copyright  2012+, You
// ==/UserScript==

;(function() {

    var hidden = "webkitHidden",
	    visibilityChange = "webkitvisibilitychange";

    var state = document[hidden];

    var title = "V2EX";
    
    if (state) {
        title = document.getElementsByClassName("item_title")[0].innerText;
        document.title = title;
    }
    
    function handleVisibilityChange() {
        if (document[hidden]) {
            title = document.getElementsByClassName("item_title")[0].innerText;
            document.title = title;
        } else {
            document.title = "V2EX";
        }
        state = document[hidden];
    }
    
    document.addEventListener(visibilityChange, handleVisibilityChange, false);
    
    setTimeout(function() {
        if (state)
    		window.location.reload();
    }, 10000);
    
})();

Just for my Chrome (webkit).