Move an element one place up or down in the dom tree with javascript

Question

I want a javascript way to move an element one place up or down in the dom tree within a particular known parent using javascript (or jquery is ok), but i want the script to kno

Answer 1

With jQuery:

var e = $("#div_2");
// move up:
e.prev().insertAfter(e);
// move down:
e.next().insertBefore(e);