I don't know nearly nothing about JSF, but I do for HTML and JavaScript, and I've found some errors in your code: | <h:panelGroup> | <h:dataTable value="#{requestBean.screenApprovalLine}" var="req"> | <h:inputText value="#{req.approverId}" readOnly="#{req.readOnly}" id="#{req.seqNbr}" /> | <h:commandButton value="Search" onmousedown="window.open('/search.jsp?approveType=' + approveType.value,'Employees','scrollbars=yes','height=200,width=150');" rendered="#{!req.readOnly}" > | | <f:param value="#{req.approveType}" name="approveType"></f:param> | </h:commandButton> | </h:panelGroup> | | </h:dataTable> | - Removed "javascript:" from onmousedown - Changed \ for / in URL of search page - Plus sign outside String before approveType.value - Removed double quote after approveType.value View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4092234#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...