diff --git a/couchapp/_attachments/jquery.extensions.js b/couchapp/_attachments/jquery.extensions.js
new file mode 100644
index 0000000..0770e6d
--- /dev/null
+++ b/couchapp/_attachments/jquery.extensions.js
@@ -0,0 +1,37 @@
+(function($) {
+  // https://issues.apache.org/jira/browse/COUCHDB-1239
+  // fixes IE8 couchapp auth
+  $.ajaxSetup({ cache: false });
+
+  // adds the jQuery httpData function if it is not available
+  // fixes jquery.couch and jquery.form calling the obsolete internal function
+	$.httpData = $.httpData || function( xhr, type, s ) {
+		var ct = xhr.getResponseHeader("content-type") || "",
+			xml = type === "xml" || !type && ct.indexOf("xml") >= 0,
+			data = xml ? xhr.responseXML : xhr.responseText;
+
+		if ( xml && data.documentElement.nodeName === "parsererror" ) {
+			jQuery.error( "parsererror" );
+		}
+
+		// Allow a pre-filtering function to sanitize the response
+		// s is checked to keep backwards compatibility
+		if ( s && s.dataFilter ) {
+			data = s.dataFilter( data, type );
+		}
+
+		// The filter can actually parse the response
+		if ( typeof data === "string" ) {
+			// Get the JavaScript object, if JSON is used.
+			if ( type === "json" || !type && ct.indexOf("json") >= 0 ) {
+				data = jQuery.parseJSON( data );
+
+			// If the type is "script", eval it in global context
+			} else if ( type === "script" || !type && ct.indexOf("javascript") >= 0 ) {
+				jQuery.globalEval( data );
+			}
+		}
+
+		return data;
+	}
+})(jQuery);
diff --git a/couchapp/_attachments/loader.js b/couchapp/_attachments/loader.js
index 86b2ed7..4781cd0 100644
--- a/couchapp/_attachments/loader.js
+++ b/couchapp/_attachments/loader.js
@@ -9,6 +9,7 @@ couchapp_load([
   "/_utils/script/sha1.js",
   "/_utils/script/json2.js",
   "/_utils/script/jquery.js",
+  "vendor/couchapp/jquery.extensions.js",
   "/_utils/script/jquery.couch.js",
   "vendor/couchapp/jquery.couch.app.js",
   "vendor/couchapp/jquery.couch.app.util.js",