I'm attempting to physically change the index order of the elements returned by a selector.  For example, I'm attempting to make it so when someone clicks on a button, it swaps the index position of the element above or below it (depending on which button they press).  I tried to assign it using something like

 

 

But it didn't seem to work.  Is there a way to do it using jQuery, or do I have to change it within DOM itself?  Or is there another way to do it?