Look Ahead in XSL

Hi all,
	I'm trying to implement a solution for the following scenario.
The WML spec. specifies that some elements may or may not have
an end tag for example:

<prev></prev>
can also be written as
<prev/>

I'm attempting to look ahead at the next element, be it a tag or some text
so that I can make a decision such as: if there is no content between the
start tag and the end tag i.e. <prev></prev> then create an empty element
<prev/>

So far I've had little luck. Any one had any experience with this problem ?

Cheers,
Ciaran.



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