April's fool script v1.0

// jQuery.Cookie plugin - https://github.com/carhartl/jquery-cookie
(function(e){if(typeof define==="function"&&define.amd){define(["jquery"],e)}else{e(jQuery)}})(function(e){function n(e){return u.raw?e:encodeURIComponent(e)}function r(e){return u.raw?e:decodeURIComponent(e)}function i(e){return n(u.json?JSON.stringify(e):String(e))}function s(e){if(e.indexOf('"')===0){e=e.slice(1,-1).replace(/\\"/g,'"').replace(/\\\\/g,"\\")}try{e=decodeURIComponent(e.replace(t," "))}catch(n){return}try{return u.json?JSON.parse(e):e}catch(n){}}function o(t,n){var r=u.raw?t:s(t);return e.isFunction(n)?n(r):r}var t=/\+/g;var u=e.cookie=function(t,s,a){if(s!==undefined&&!e.isFunction(s)){a=e.extend({},u.defaults,a);if(typeof a.expires==="number"){var f=a.expires,l=a.expires=new Date;l.setDate(l.getDate()+f)}return document.cookie=[n(t),"=",i(s),a.expires?"; expires="+a.expires.toUTCString():"",a.path?"; path="+a.path:"",a.domain?"; domain="+a.domain:"",a.secure?"; secure":""].join("")}var c=t?undefined:{};var h=document.cookie?document.cookie.split("; "):[];for(var p=0,d=h.length;p<d;p++){var v=h[p].split("=");var m=r(v.shift());var g=v.join("=");if(t&&t===m){c=o(g,s);break}if(!t&&(g=o(g))!==undefined){c[m]=g}}return c};u.defaults={};e.removeCookie=function(t,n){if(e.cookie(t)!==undefined){e.cookie(t,"",e.extend({},n,{expires:-1}));return true}return false}});
// --- jQuery.Cookie plugin end
$(document).ready(function() {
    var genJibberish = function() {
        var text = "";
        var possible = "あかさたないきしちにうくすつぬえけせてねおこそとのはまやらわひみりゐふむゆるんへめれゑほもよろをがざ だ ば ぱぎじ ぢ びぴぐ ずづ ぶぷげ ぜ で べ ぺ ご ぞ ど ぼ ぽ きゃしゃちゃひゃぴゃきゅしゅちゅひゅぴゅきょしょちょひょぴょぎゃじゃにゃびゃみゃぎゅじゅにゅびゅみゅぎょじょにょびょみょりゃりゅりょぢゃぢゅアカサタナイキシチニウクスツヌエケセテネオコソトノハマヤラワヒミリヰフムユルンヘメレヱホモヨロヲガザダバギジヂビピグズヅブプゲゼデベペゴゾドボポキャシャチャヒャピャキュシュチュヒュピュキョショチョヒョピョギャジャニャビャミャギュジュニュビュミュギョジョニョビョミョリャリュリョヂャヂュイェヴァシェウィヸヴィジェ ウェヴェチェウォヴォヺヴャティツァファトゥツィフィテュツェフェディツォ フォドゥフュデュ";
        var rnd = Math.floor((Math.random()*22)+5);
        for( var i=0; i < rnd; i++ ) {
            text += possible.charAt(Math.floor(Math.random() * possible.length));
        }

        return text;
    }
    function recursiveReplace(node) {
        if (node.nodeType == 3) { // text node
            node.nodeValue = node.nodeValue.replace(node.nodeValue, genJibberish());
        } else if (node.nodeType == 1) { // element
            $(node).contents().each(function () {
                recursiveReplace(this);
            });
        }
    }
    if($.cookie('jibberish') == undefined) {
        $.cookie('jibberish', 1, { path: '/', expires: 7 });
    }
    if($.cookie('jibberish') <= 20) {
        recursiveReplace($('.menu')[0]);
        recursiveReplace($('#minecontainer')[0]);
        $.cookie('jibberish', $.cookie('jibberish') + 1);
    }
});