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,
                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));
        });
    };
})();