[xsl] Recursion (I think)

[Nicholas Orr <nick@xxxxxxxxxxx>]

I'm very new to XSL and learning by doing, so thanks in advance for  
responding.  I've got some xml which has come out of a filemaker  
database where you can have a layoutobject that contains either field  
objects or other layoutobjects in a recursive style list :

<FMPReport link="Summary.xml" type="Report" creationDate="25/09/2005"  
creationTime="9:28:42 PM">
    <File name="DDR Sample.fp7" path="/Volumes/BIGHD/Projects/DDR">
        <LayoutCatalog>
            <Layout id="2" name="Layout #2" includeInMenu="True">
                <Object type="GroupButton" flags="0" portal="-1"  
rotation="0">
                    <GroupButtonObj numOfObjs="14">
                        <Object type="GroupButton" flags="0"  
portal="-1" rotation="0">
                            <GroupButtonObj numOfObjs="6">
                                <Object type="Field" flags="0"  
portal="-1" rotation="0">
                                </Object>
                            </GroupButtonObj>
                        </Object>
                    </GroupButtonObj>
                </Object>
                <Object type="GroupButton" flags="0" portal="-1"  
rotation="0">
                    <GroupButtonObj numOfObjs="6">
                        <Object type="Field" flags="0" portal="-1"  
rotation="0">
                        </Object>
                    </GroupButtonObj>
                </Object>
                <Object type="Field" flags="0" portal="-1"  
rotation="0">
                </Object>
            </Layout>
        </LayoutCatalog>
    </File>
</FMPReport>

I'm trying to run a for-each loop on all of the field objects that  
does :

 <xsl:value-of select="./@type"/>

and I can do this fine for any field object at the lowest point in  
the tree by referring to it explicity:

/FMPReport/File/LayoutCatalog/Layout/Object[@type='Field']

which means I can also then reference the parent "Layout" node using :

<xsl:value-of select="../../@id"/>

the problem I have is how do I reference every possible Object 
[@type='Field'] in the tree and still be able to reference the parent  
Layout node?

Thanks,
Nick