Kanji Bigifier Userscript

// ==UserScript==
// @name         Kanji Bigifier
// @namespace    Kanji.Bigifier
// @version      0.1
// @description  Kanji Bigifier
// @author       Dunno
// @match        *://boards.4channel.org/int/*
// @match        *://boards.4channel.org/jp/*
// @grant        none
// ==/UserScript==

void function () {
    function e(e) {
        try {
            var t, n;
            t = document.getElementsByTagName("head")[0], n = document.createElement("style"), n.type = "text/css", t.appendChild(n), n.innerHTML = e
        } catch (u) {
            document.styleSheets.length || document.createStyleSheet(), document.styleSheets[0].cssText += e
        }
    }
    var t = "kanjibigifier",
        n = ["." + t + " {", "font-size: 24px;", "}"].join(""),
        u = "//text()[not(ancestor::script) and not(ancestor::style)]",
        a = /([\u2E80-\u2EFF\u2F00-\u2FDF\u3000-\u303F\u3040-\u309F\u30A0-\u30FF\u31C0-\u31EF\u3200-\u32FF\u3300-\u33FF\u3400-\u4DBF\u4E00-\u9FFF]+)/g;
    e(n);
    for (var d = document.evaluate(u, document, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null), o = d.snapshotLength - 1; o >= 0; o--) {
        var s = d.snapshotItem(o);
        if (a.test(s.nodeValue)) {
            var c = document.createElement("span"),
                l = s.nodeValue;
            s.parentNode.replaceChild(c, s), a.lastIndex = 0;
            for (var r = null, i = 0; r = a.exec(l);) {
                c.appendChild(document.createTextNode(l.substring(i, r.index)));
                var m = document.createElement("span");
                m.setAttribute("class", t), m.appendChild(document.createTextNode(r[0])), c.appendChild(m), i = a.lastIndex
            }
            c.appendChild(document.createTextNode(l.substring(i))), c.normalize()
        }
    }
}();