getting an attrib value from another attrib value

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Hi,

This may be more XPath than XQuery so I hope you don't mind me posting here.

I want to write a query that given a string (let's say "Torbay") will return the uid attribute of the element with the name attribute equal to the string value.

I have only got so far as being able to get the whole node (i.e. including children) with the matching name attribute as follows:

for $areaserved in doc("...")/*[@name = "Torquay"] return $areaserved

I should say that the matching name attribute could appear at any level in the XML document and may or may not have child elements.

Example XML:

<?xml version="1.0" encoding="UTF-8"?>
<county name="Devon" uid="0">
    <district uid="8" name="Torbay">
        <town uid="210" name="Brixham" pct="Torbay"/>
        <town uid="211" name="Paignton" pct="Torbay"/>
        <town uid="212" name="Torquay" pct="Torbay">
            <settlement name="Babbacombe" uid="979"/>
            <settlement name="Barton" uid="803"/>
            <settlement name="Chelston" uid="804"/>
        </town>
    </district>
</county>

Many Thanks
Rob Walpole