I need to offset a sibling match for an offset of X.  Example:

<elements>
<element item="1">APPLE</element>
<element item="2">ORANGE</element>
<element item="3">GRAPE</element>
<element item="4">WATERMELON</element>
<element item="5">CRANBERRY</element>
</elements>

If the offset were 0, then the result would be "APPLE", if the offse were 2,
then the result would be "ORANGE".

The template is always applied in order of the item, but the look up is
based on this offset value.

So, the big challenge:  if the current item was 5 and the offset was 2, then
the result would be "ORANGE".

Any ideas?  Do you need more input?

Thanks for the help!

Karl