xpath with xml ajax

xpath with xml ajax

I am tring to retrieve a specific event from my xml document
this is the code i am using:

$.ajax({
     type: "GET",
     url: "../files/events.xml",
     dataType: "xml",
     aSync:true,
     success: function(xml) {
         $(xml).find("event[datestart='10/13/2008']").each( function() {
            ...
         });
     }
   });


the xml looks like this

<events>
   <event id="102">
   <datestart>10/13/2008</datestart>
   <dateend>10/14/2008 </dateend>
   <title>Exl Pharma - Pharmaceutical Sampling Strategies</title>
   <location>Philadelphia, PA</location>
   <link>http://www.exlpharma.com/eventDetail.php?id=140</link>
   <description/>
   </event>
</events>


I want to return just the event that has datestart 10/13/2008.
There are other events in the xml i just wanted to simplify it for posting.
What is wrong with my code?

thanks
Todd