// http://blog.pengoworks.com/index.cfm/2008/9/24/A-quick-and-dirty-swap-method-for-jQuery

jQuery.fn.swap = function(b){
    b = jQuery(b)[0];
    var a = this[0];
    var t = a.parentNode.insertBefore(document.createTextNode(''), a);
    b.parentNode.insertBefore(a, b);
    t.parentNode.insertBefore(b, t);
    t.parentNode.removeChild(t);
    return this;
};