Removing if no data - iterating through every child (sorry the codes a b

Initially, sorry for the code seeming long. But it's a bit of a follow up to 
yesterdays questions (which I solved thanks to y'alls help).


Ok, so I have an XML file, where I can have any number of nodes, which can 
have any number of Children (and they can have children and so on).
Basically, I want to strip a node if it or it's children has no data, or has 
no attributes with data anywhere in it's descendants.
I sort of get the logic, but fail miserably to even consider how to fix it 
so that the last example works (Checkbox 6) - ie. Stripping a tree half way 
down.
ANY help would be great.

Thanks ALot

Bryan.

P.S. the number of children in the example is not overkill, there will 
usually be at least 4 - sorry.

ORIGINAL :

                <topNode>
                        <Checkbox1>
                                <really>
                                        <long>
                                                <really>
                                                        <really>
                                                                <long 
Attribute="0"/>
                                                        </really>
                                                </really>
                                        </long>
                                </really>
                        </Checkbox1>
                        <Checkbox2>
                                <really>
                                        <long>
                                                <really>
                                                        <really>
                                                                <long> data 
</long>
                                                        </really>
                                                </really>
                                        </long>
                                </really>
                        </Checkbox2>
                        <Checkbox3>
                                <really>
                                        <long>
                                                <really>
                                                        <really>
                                                                <long />
                                                        </really>
                                                </really>
                                        </long>
                                </really>
                        </Checkbox3>
                        <Checkbox4>
                                <really>
                                        <long>
                                                <really>
                                                        <really>
                                                                <long 
Attribute=""/>
                                                        </really>
                                                </really>
                                        </long>
                                </really>
                        </Checkbox4>
                        <Checkbox5>
                                <really>
                                        <long>
                                                <really>
                                                        <really>
                                                                <long Attribute="0" 
attribute=""> data </long>
                                                        </really>
                                                </really>
                                        </long>
                                </really>
                        </Checkbox5>
                        <Checkbox6>
                                <really>
                                        <long Attribute="data">
                                                <really>
                                                        <really>
                                                                <long/>
                                                        </really>
                                                </really>
                                        </long>
                                </really>
                        </Checkbox6>
                </topNode>



Output :

                <topNode>
                        <Checkbox1>
                                <really>
                                        <long>
                                                <really>
                                                        <really>
                                                                <long 
Attribute="0"/>
                                                        </really>
                                                </really>
                                        </long>
                                </really>
                        </Checkbox1>
                        <Checkbox2>
                                <really>
                                        <long>
                                                <really>
                                                        <really>
                                                                <long> data 
</long>
                                                        </really>
                                                </really>
                                        </long>
                                </really>
                        </Checkbox2>
                        <Checkbox5>
                                <really>
                                        <long>
                                                <really>
                                                        <really>
                                                                <long Attribute="0"> 
data </long>
                                                        </really>
                                                </really>
                                        </long>
                                </really>
                        </Checkbox5>
                        <Checkbox6>
                                <really>
                                        <long Attribute="data" />
                                </really>
                        </Checkbox6>
                </topNode>