Sending a file with jquery and xml

I made a simple script to send some user data to my servlet. The user data is taken from a form and marshalled into an xml document and then sent to the servlet, now I want to also take a file (image) and send it with the xml document, is there a way to do it without making another servlet that stores file and using another .post ?

Here is my code so far:

    $.post( "../Profile", updateData,
        function( data ){
            //This is the success function
            var xmlDoc = data;
            var xmlString = (new XMLSerializer()).serializeToString(xmlDoc);
            console.log("log. Data: " + xmlString);
            location.reload(); //ricarica la pagina a profilo aggiornato
        }
    );

any suggestion about what to do are well appreciated, thanks everybody.