jQuery.fn.sortElements = (function() {

	var sort = [].sort;

	return function(comparator, getSortable) {

		getSortable = getSortable || function() {
			return this;
		};

		var placements = this.map(function() {

			var sortElement = getSortable.call(this), parentNode = sortElement.parentNode,

			// Since the element itself will change position, we have
			// to have some way of storing its original position in
			// the DOM. The easiest way is to have a 'flag' node:
			nextSibling = parentNode.insertBefore(document.createTextNode(''), sortElement.nextSibling);

			return function() {

				if (parentNode === this) {
					throw new Error("You can't sort elements if any one is a descendant of another.");
				}

				// Insert before flag:
				parentNode.insertBefore(this, nextSibling);
				// Remove flag:
				parentNode.removeChild(nextSibling);

			};

		});

		return sort.call(this, comparator).each(function(i) {
			placements[i].call(getSortable.call(this));
		});

	};

})();