Xpath count() within a relative path

I am testing some xpath expresions using http://ift.tt/1i4Ssa3

I have this xml code

<urls>
    <url uri="http://ift.tt/14uee2R">
        <elements>
            <element title="header" xpath="My header"></element>
        </elements>
    </url>
    <url uri="http://ift.tt/1uhnn77">
        <elements>
            <element title="header3" xpath="Third header"/>
            <element title="header2" xpath="Second header"/>
        </elements>
    </url>
</urls>

Usually when I query xpath with //element/@title I get

Attribute='title="header"' Attribute='title="header3"' Attribute='title="header2"'

What I'm looking for is a way to get a count of elements by url. It could be something like this. When I query:

//urls/url/elements/count(element)

I get

Double='1.0' Double='2.0'

Is there a way to do this in a single xpath expression?

Some failing examples:

This returns the count of all element 3 (is not what I'm looking for)

count(//urls/url/elements/element)

This returns the count of all elements list 2 (neither what I'm looking for)

count(//urls/url/elements)

I need this because I need to know how many elements does the xml have for each url, so I can use this count afterwards