Select DIV in jQuery

Question

I have two divs with ID #container.

In first one is class .current-content
[div#container -- div.current-content]

The second one is contained in class .next-content and contain class current-content
[div#container -- div.next-content -- div#container -- div.current-content]

Is possible to have only one #container with class .current-content with elements from second .current-content ?
Eventually how do that?
Thanks. :)

Answer 1

Each id value must be used only once within a document. If more than one element has been assigned the same ID, queries that use that ID will only select the first matched element in the DOM. This behavior should not be relied on, however; a document with more than one element using the same ID is invalid.

from http://api.jquery.com/id-selector/