Click to spin JS.

web-enhancer.js

// paste this in your browser's JS console for a better viewing and clicking experience
var style = document.createElement('style');
style.innerHTML = '@keyframes spin {from {transform:rotate(0deg);} to {transform:rotate(359deg);} } @keyframes spinrev {from {transform:rotate(0deg);} to {transform:rotate(-359deg);} }';
document.head.appendChild(style);
document.body.addEventListener('click', function(event) {
    event.preventDefault();
    var target = event.target;
    var spin = (Math.random() < 0.5) ? 'spin' : 'spinrev';
    target.style.animation = spin + ' 4s infinite linear';
});