RedBox Next And Previous Buttons

Hello All,

I have on my page a list of promotion items with a "Details" link to a
popup window ( using redbox ) that gives more precise details about
the promotion item. However I would like to add next and previous
buttons on my popup Window so that the user does not need to close the
current one and click on another promotion details link.

Is this possible ? I thought about a solution that would close the
actual window and load another one corresponding to the next promotion
item details. But I think we can just load the details through ajax
but I don't know how to exactly do this using.