quick simple searches on domnode

[Justin]

What is the best  way to answer the question: Are there any child nodes 
in namespace X?

I have seen the NodeFilter and TreeWalker/Traversal options.
There is Xalan, but I haven't needed it yet and I dread adding another 
dependency and code for this.

I would like to avoid walking the entire DOM for each query. Is there 
some way to take advantage of the internal dom structure of xerces to 
make this query as quick and painless as possible?


Thnx,
Justin
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