[jQuery] result of 1.5b sortable("serialize"), into an array of id?

[jQuery] result of 1.5b sortable("serialize"), into an array of id?


I'm not familiar with the format of the result of
sortable("serialize").
See demo: http://dev.jquery.com/view/trunk/ui/demos/ui.sortable.html ,
click "Serialize!"
How to convert it into an array of id?
Thank you!