I am trying small application for AJAX in struts 2.1.6. when i am giving the <s:head theme="ajax" /> tag in jsp getting the following error. Please tell me the procedure how to use AJAX in struts 2.1.6 or how to use dojo in struts 2.1.6.

FreeMarker template error!



Expression parameters.parseContent is undefined on line 45, column 28 in template/ajax/head.ftl.
The problematic instruction:
----------
==> ${parameters.parseContent?string} [on line 45, column 26 in template/ajax/head.ftl]
----------

Java backtrace for programmers:
----------
freemarker.core.InvalidReferenceException: Expression parameters.parseContent is undefined on line 45, column 28 in template/ajax/head.ftl.