Quick patch for JSONP error callback support in Zepto

gistfile1.txt

diff --git a/src/ajax.js b/src/ajax.js
index d75e13c..f9d399f 100644
--- a/src/ajax.js
+++ b/src/ajax.js
@@ -99,6 +99,11 @@
       },
       xhr = { abort: abort }, abortTimeout;
 
+    if (options.error) script.onerror = function() {
+      xhr.abort();
+      options.error();
+    };
+    
     window[callbackName] = function(data){
       clearTimeout(abortTimeout);
       $(script).remove();
diff --git a/test/ajax.html b/test/ajax.html
index fc0dd8d..5d6e3b5 100644
--- a/test/ajax.html
+++ b/test/ajax.html
@@ -118,6 +118,16 @@
         t.assertEqual(1, $('script[src^=fixtures]').size());
         t.assertIn('abort', xhr);
       },
+      
+      testAjaxGetJSONPErrorCallback: function(t){
+        var successFired, errorFired, xhr = $.ajax({
+          type: 'GET',
+          url: 'fixtures/404.js?callback=?&timestamp='+(+new Date),
+          dataType: 'jsonp',
+          success: function() { t.refute(true); },
+          error: function() { t.assert(true); }
+        });
+      },
 
       testAjaxLoad: function(t) {
         var testEl = $('#ajax_load');