jQuery.extend({
   /*
   postJSON: function( url, data, callback) {
      return jQuery.post(url, data, callback, "json");
   }
   */
	postJSON: function( url, data, callback) {
		return jQuery.ajax({
			url: url,
			dataType: 'json',
			data: data,
			async: false,
			type: "POST",
			enctype: 'multipart/form-data',
			success: callback
		});
	}

});