azeaezE.js

(function ($) {
 Drupal.behaviors.autoUpload = {
   attach: function(context, settings) {
     $('.form-item input.form-submit[value=Upload]', context).hide();
     $('.form-item input.form-file', context).change(function() {
       $parent = $(this).closest('.form-item');

       //setTimeout to allow for validation
       //would prefer an event, but there isn't one
       setTimeout(function() {
         if(!$('.error', $parent).length) {
           $('input.form-submit[value=Upload]', $parent).mousedown();
         }
       }, 100);
     });
   }
 };
})(jQuery);