javascript:(function(){function q(){var a=document.createElement("div");a.setAttribute("class",r);document.body.appendChild(a);setTimeout(function(){document.body.removeChild(a)},100)}function l(a){var b=a.offsetHeight;a=a.offsetWidth;return b>t&&b<u&&a>v&&a<w}function x(a){for(var b=0;a;)b+=a.offsetTop,a=a.offsetParent;a=b;return a>=m&&a<=y+m}function n(){for(var a=document.getElementsByClassName(e),b=new RegExp("\\b"+e+"\\b");0<a.length;)a[0].className=a[0].className.replace(b,"")}var t=30,v=30,u=350,w=350, e="mw-harlem_shake_me",p=["im_drunk","im_baked","im_trippin","im_blown"],r="mw-strobe_light",y=function(){var a=document.documentElement;return window.innerWidth?window.innerHeight:a&&!isNaN(a.clientHeight)?a.clientHeight:0}();var%20m=window.pageYOffset?window.pageYOffset:Math.max(document.documentElement.scrollTop,document.body.scrollTop);for(var%20f=document.getElementsByTagName(%22*%22),h=null,c=0;c%3Cf.length;c++){var%20d=f[c];if(l(d)&&x(d)){h=d;break}}if(null===d)console.warn(%22Could%20not%20find%20a%20node%20of%20the%20right%20size.%20Please%20try%20a%20different%20page.%22);%20else{(function(){var%20a=document.createElement(%22link%22);a.setAttribute(%22type%22,%22text/css%22);a.setAttribute(%22rel%22,%22stylesheet%22);a.setAttribute(%22href%22,%22https://s3.amazonaws.com/moovweb-marketing/playground/harlem-shake-style.css%22);a.setAttribute(%22class%22,%22mw_added_css%22);document.body.appendChild(a)})();(function(){var%20a=document.createElement(%22audio%22);a.setAttribute(%22class%22,%22mw_added_css%22);a.src=%22https://s3.amazonaws.com/moovweb-marketing/playground/harlem-shake.mp3%22;a.loop=!1;a.addEventListener(%22canplay%22,%20function(){setTimeout(function(){h.className+=%22%20%22+e+%22%20im_first%22},500);setTimeout(function(){n();q();for(var%20b=0;b%3Cg.length;b++)g[b].className+=%22%20%22+e+%22%20%22+p[Math.floor(Math.random()*p.length)]},15500)},!0);a.addEventListener(%22ended%22,function(){n();for(var%20b=document.getElementsByClassName(%22mw_added_css%22),k=0;k%3Cb.length;k++)document.body.removeChild(b[k])},!0);a.innerHTML=%22%20%3Cp%3EIf%20you%20are%20reading%20this,%20it%20is%20because%20your%20browser%20does%20not%20support%20the%20audio%20element.%20We%20recommend%20that%20you%20get%20a%20new%20browser.%3C/p%3E%20%3Cp%3E%22;%20document.body.appendChild(a);a.play()})();var%20g=[];for(c=0;c%3Cf.length;c++)d=f[c],l(d)&&g.push(d)}})();
This trick also works on any website, not just Scratch Edit: It doesn't work on my school Chromebook so it might not work for some of yall