Jquery multidimensional array of DOM element children
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I'm trying to get the DOM hierarchy of id's into a javascript array.  (I'm using jQuery UI sortable to rearrange DIVs and their toArray and serialize present a flat (non-hierarchical) result).

Code built on other SOF jfiddle solutions and such, here's my sandbox:

<http://jsfiddle.net/eG6Q9/>

How would one go about iterating through the DOM children and recording their id's into a multidimensional array?