I'd have to play with this, but I think it may be possible with 1 potential bug...
I think (not positive) that treviews use a single didget selectedrow identifier that we can do math on. Prev and Next buttons could potentiall decriment/increment that selection number, which should in ture change the QH window.
The potential bug being detection of the last row in your list. I don't recall there being an atribute for total rows and am not sure what would happen if a button script attempted to select a row that didn't exist.
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