CakePHP use JsHelper in elements

JsHelper cant to use in elements ? I try use it (JsHelper) but not work. And one other question: was AjaxHelper deprecate in cakePHP 1.3 ?. I read document but dont see notice, i only see JavascriptHelper w开发者_JAVA百科as deprecated.

JsHelper can be used in element. What the error message? About AjaxHelper, see http://book.cakephp.org/view/1358/AJAX

YES, AjaxHelper DID be deprecated, see http://book.cakephp.org/2.0/en/appendices/2-0-migration-guide.html#xmlhelper-ajaxhelper-and-javascripthelper-removed