fit pixiv manga page to window

pixiv_manga_fit.user.js

// ==UserScript==
// @name           pixiv_manga_fit
// @namespace      http://mikan.sakura.tv
// @description    fit pixiv manga page to window
// @include        http://www.pixiv.net/member_illust.php?*mode=manga*
// ==/UserScript==

(function () {
    var source = function () {
        var screen_x = function () {
            return window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft;
        };
        var screen_y = function () {
            return window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop;
        };
        var screen_w = function () {
            return window.innerWidth || document.documentElement.clientWidth || document.body.offsetWidth;
        };
        var screen_h = function () {
            return window.innerHeight || document.documentElement.clientHeight || document.body.offsetHeight;
        };

        var on = document.cookie.match(/(^|; )pixiv_manga_fit=on/);

        // add switch button
        var cont = document.getElementById("control-container");
        var onclick;
        var li = document.createElement("li");
        li.id = "toggle-pixiv-manga-layout";
        li.style.marginLeft = "10px";
        li.style.overflow = "hidden";
        li.style.verticalAlign = "top";
        li.style.fontSize = "18px";
        li.style.textAlign = "center";
        li.style.color = "#fff";
        li.style.textShadow = "0px 1px .75px #666";
        li.title = "⇔";
        li.innerHTML = "⇔";
        if (on) {
            onclick = function () {
                document.cookie= "pixiv_manga_fit=off;expires=Tue, 1-Jan-2038 00:00:00 GMT";
                location.reload();
            };
            li.title = "end fitting";
            li.style.backgroundColor = "#0096DB";
        } else {
            onclick = function () {
                document.cookie= "pixiv_manga_fit=on;expires=Tue, 1-Jan-2038 00:00:00 GMT";
                location.reload();
            };
            li.title = "fit to window";
        }
        cont.getElementsByTagName("ul")[0].appendChild(li);
        li.addEventListener("click", onclick, false);

        // exit if switch is off
        if (on); else return;

        var meta = document.getElementById("meta");
        // move title to bottom
        var title = meta.getElementsByClassName("title")[0];//.style.display = "none";
        var footer = document.getElementsByTagName("footer")[0];
        title.parentNode.removeChild(title);
        footer.appendChild(title);
        // verticalize controls
        var button_a = meta.getElementsByTagName("li");
        for (var i = 0; i < button_a.length; ++i) {
            button_a[i].style.display = "block";
            button_a[i].style.marginLeft = "0";
            button_a[i].style.marginBottom = "3px";
        }
        // move controls
        var cont = document.getElementById("control-container");
        cont.style.top = "6px";
        cont.style.right = "6px";
        // move original size buttons
        var navi_a = document.getElementsByClassName("navigation-container");
        for (var i = 0; i < navi_a.length; ++i) {
            var n = navi_a[i];
            var p = n.parentNode;
            p.removeChild(n);
            p.appendChild(n);
        }
        // resize page number
        var page = document.getElementById("page-number");
        page.style.padding = "3px";
        page.style.right = "3px";
        page.style.bottom = "3px";
        page.style.backgroundColor = "transparent";
        //total.innerHTML = total.innerHTML.match(/(.*)P/)[1];
        // resize image
        var img_resize = function () {
            var img_c_a = document.getElementsByClassName("image-container");
            var w = screen_w();
            var h = screen_h();
            for (var i = 0; i < img_c_a.length; ++i) {
                img_c_a[i].style.padding = "3px";
                img_c_a[i].style.paddingRight = "36px";
                var img = img_c_a[i].getElementsByTagName("img")[0];
                img.style.maxWidth = w - 60 + "px";
                img.style.maxHeight = h - 6 + "px";
            }
            var scroll_reset = function () {
                pixiv.manga.move(pixiv.manga.position);
            };
            setTimeout(scroll_reset, 0);
        };
        img_resize();
        window.addEventListener("resize", img_resize, false);
        // debug message
        //console.log && console.log("no error");
    };
    var text = document.createTextNode("(" + source.toString() + ")()");
    var script = document.createElement('script');
    script.appendChild(text);
    document.getElementsByTagName('head')[0].appendChild(script);
})();