Testing for an element NOT present

[Madhu Menon <madhu@xxxxxxxxxxxxxxx>]

Hi.

Someone was kind enough last week to explain how to check for the presence 
of an element.

What I would like to know is how to carry out certain translations ONLY if 
an element is NOT present in the XML.

For example, suppose I had a tree like:

<details>
	<element1>blah blah</element1>
	<element2>yada yada</element2>
</details>

I want to perform a certain translation only if <element2> is NOT a part of 
the data. For example, I would then spit out a message saying "Element 2 
details are currently not available".

How would I go about doing this?

TIA,

Madhu



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