Scratch Userscript

Changes the background to a cool pattern, has a parallax effect on the background, adds a border to the forum (so text is visible against the background), scrolling more than 600px will make page content rotate in 3d, and transitions out on page unloads.

Versión del día 01/10/2014. Echa un vistazo a la versión más reciente.

// ==UserScript==
// @name         Scratch Userscript
// @namespace    http://scratch.mit.edu/discuss/topic/54714/
// @version      0.1
// @description  Changes the background to a cool pattern, has a parallax effect on the background, adds a border to the forum (so text is visible against the background), scrolling more than 600px will make page content rotate in 3d, and transitions out on page unloads.
// @author       MegaApuTurkUltra
// @match        http://scratch.mit.edu/*
// @grant        none
// ==/UserScript==

$(document).ready(function(){
$("#pagewrapper").css({'background':'url(http://i.imgur.com/ra8F49A.jpg)',"background-size":"100% auto","background-repeat": "repeat-y"}).css('perspective', '800px');
$("#content").css({'transform-style': 'preserve-3d', 'transition': 'transform 0.5s', 'backface-visibility': 'hidden'});
$("#topnav").css("z-index", "9999999");
$("#djangobbindex").css({'background':'rgba(255, 255, 255, 0.8)', 'padding':'10px', 'border-radius':'10px'});

var t, l = (new Date()).getTime(), scrolling = false;
initialAmt = 0;
$(window).scroll(function(){
    $("#pagewrapper").css('background-position-y', ($(document).scrollTop()*10/11)+'px');
    $("#content").css('transform-origin', (($(document).width()/2))+"px "+($(document).scrollTop()+$(window).height()/2)+"px");
    diff = Math.abs($(document).scrollTop()-initialAmt);
    if(diff>600)$("#content").css('transform', 'rotateX(-5deg) translateZ(-50px) translateY(50px)');
    var now = (new Date()).getTime();
    if(now - l > 400 && !scrolling ){
        $(this).trigger('scrollStart');
        l = now;
    }
    clearTimeout(t);
    t = setTimeout(function(){
        if (scrolling)
            $(window).trigger('scrollEnd');
    }, 300);
});

$(window).bind('scrollStart', function(){
    scrolling = true;
    initialAmt = $(document).scrollTop();
});

$(window).bind('scrollEnd', function(){
    scrolling = false;
    initialAmt = $(document).scrollTop();
    $("#content").css('transform', 'none');
});
window.onbeforeunload=function(){
   $("#content").css('transform', 'translateZ(-50px)').animate({'opacity':'0'}, 700);
};
});