Index: ajax.js
===================================================================
--- ajax.js	(revision 6389)
+++ ajax.js	(working copy)
@@ -99,6 +99,7 @@
 	get: function( url, data, callback, type ) {
 		// shift arguments if data argument was ommited
 		if ( jQuery.isFunction( data ) ) {
+			type = callback;
 			callback = data;
 			data = null;
 		}
@@ -122,6 +123,7 @@
 
 	post: function( url, data, callback, type ) {
 		if ( jQuery.isFunction( data ) ) {
+			type = callback;
 			callback = data;
 			data = {};
 		}