shake?

shake.js

var shakeThis = function(elem) {
	// console.log('left');
	$(elem).animate({
		left: "-5px"
	}, 70, function() {
		// console.log('right');
		$(elem).animate({
			left: "+5px"
		}, 70, function() {
			// console.log('left');
			$(elem).animate({
				left: "-5px"
			}, 70, function() {
				// console.log('right');
				$(elem).animate({
					left: "+5px"
				}, 70, function() {
					// console.log('left');
					$(elem).animate({
						left: "-5px"
					}, 70, function() {
						// console.log('right');
						$(elem).animate({
							left: "0"
						}, 70);
					});
				});
			});
		});
	});
}

shake that head.

For future job reference I should disclaim that this is not my code but is here for educational purposes on how to not write code.