I mit the error too, html code is: <SPAN | onclick="__selectDate('j_id51:project_planStartDate', 'j_id51:project_planStartDate');"> Above, parameter1 and parameter2 are same? Why the function definition in "calendar.htm" is different: function __selectDate(calName, viewCtlName) { <s:decorate template="/page/tiles/formFieldDecorate.xhtml"> | <ui:define name="label">Plan Start Date</ui:define> | <h:inputText id="planStartDateInput" value="#{project.planStartDate}"> | <s:convertDateTime pattern="MM/dd/yyyy"/> | </h:inputText> | <s:selectDate id="planStartDateCal" for="planStartDateInput" startYear="2000" endYear="2010"> | <h:graphicImage url="/img/dtpick.gif" style="margin-left:5px;cursor:pointer" title="Select a date"/> | </s:selectDate> | </s:decorate> View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4059295#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...