jsp - On clicking search button display update button and hide save button -

<s:if test='%{cust_id!=""}'> <s:submit cssclass="pagebutton" action="custmer_ entry" theme="simple" value="update" on click="validate"/>

on loading page,i want hide update button.on clicking search button display update button , hide save button.

sorry wrong.
when check

    <s:if test='%{cust_id!=""}'>

you need check if null like

    <s:if test='%{cust_id!="" || cust_id!=null}'>

please check way

Macro