Need help selected text fields visible for particular option from drop down list in JSP(struts)

Hi,
I am doing struts application , in JSP file I have dropdown list and some text fields.I want to do when I select one option from dropdown list,particular text fields should visible and remaining should be hide.This functionality need for all options in drop down list.In JSP I have been using struts tag libraries like bean,html,logic.How can I do that?

Below code is available:

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
<html:html>
<head>
    <script language="JavaScript" type="text/javascript">

}

></script>
</head>

<body>
     <html:form action="/entityAction" >
      <table border="1">
       <tr>
           <td>EJB(Entity Bean) Type:</td>
           <td>
               
             <html:select property="ejbType">
                   <%--<option value="D^E,sport,nickName,ownerName,franchisePlayer">CMP-CREATE</option>--%>
                   <html:option value="D^E,sport,nickName,ownerName,franchisePlayer">CMP-CREATE</html:option>
                   <html:option value="D^E,nickName,sport,ownerName,franchisePlayer">BMP-CREATE</html:option>
                   <html:option value="D,franchisePlayer,ownerName^E,sport,nickName">CMP-REMOVE</html:option>
                   <html:option value="D,ownerName,franchisePlayer^E,sport,nickName">BMP-REMOVE</html:option>
                   <html:option value="D^E,sport,ownerName,nickName,franchisePlayer">CMP-DISPLAY</html:option>
                   <html:option value="D^E,sport,nickName,franchisePlayer,ownerName">BMP-DISPLAY</html:option>
 
               </html:select>
           </td>
 
       </tr>
       <logic:present property="D^E,sport,nickName,ownerName,franchisePlayer">
       <tr>
           <td>Sport Name:</td>
           <%--<td><input type="text" id="sport" name="sport" value="">(eg:basketball)</td>--%>
            <td><html:text property="sport" value=""/>(eg:basketball)</td>
            <td>(for CMP(CREATE,DELETE,DISPLAY)</td>
       </tr>
 
       <tr>
           <td>Nick Name:</td>
           <td><html:text property="nickName" value=""/>(eg:kings)</td>
           <td>(for CMP(CREATE,DELETE,DISPLAY)</td>
       </tr>
 
       <tr>
         <td>Owner Name:</td>
         <td><html:text property="ownerName" value=""/>(eg:Joe Maloof)</td>
           <td>(for CMP(CREATE,DISPLAY)</td>
       </tr>
 
       <tr>
         <td>Franchise Player Name:</td>
         <td><html:text property="franchisePlayer" value=""/>(eg:Sony Williams)</td>
           <td>(for CMP(CREATE,DISPLAY)</td>
       </tr>
      </logic:present>
 
           <logic:present property="D^E,sport,ownerName,nickName,franchisePlayer">
                 <tr>
                     <td>Sport Name:</td>
                     <%--<td><input type="text" id="sport" name="sport" value="">(eg:basketball)</td>--%>
                      <td><html:text property="sport" value=""/>(eg:basketball)</td>
                      <td>(for CMP(CREATE,DELETE,DISPLAY)</td>
                 </tr>
 
                 <tr>
                     <td>Nick Name:</td>
                     <td><html:text property="nickName" value=""/>(eg:kings)</td>
                     <td>(for CMP(CREATE,DELETE,DISPLAY)</td>
                 </tr>
 
                 <tr>
                   <td>Owner Name:</td>
                   <td><html:text property="ownerName" value=""/>(eg:Joe Maloof)</td>
                     <td>(for CMP(CREATE,DISPLAY)</td>
                 </tr>
 
                 <tr>
                   <td>Franchise Player Name:</td>
                   <td><html:text property="franchisePlayer" value=""/>(eg:Sony Williams)</td>
                     <td>(for CMP(CREATE,DISPLAY)</td>
                 </tr>
           </logic:present>
 
       <logic:present property="D,franchisePlayer,ownerName^E,sport,nickName">
       <tr>
           <td>Sport Name:</td>
           <%--<td><input type="text" id="sport" name="sport" value="">(eg:basketball)</td>--%>
            <td><html:text property="sport" value=""/>(eg:basketball)</td>
            <td>(for CMP(CREATE,DELETE,DISPLAY)</td>
       </tr>
 
       <tr>
           <td>Nick Name:</td>
           <td><html:text property="nickName" value=""/>(eg:kings)</td>
           <td>(for CMP(CREATE,DELETE,DISPLAY)</td>
       </tr>
 
      </logic:present>
 
      </table>
   <input type="submit" value="Enter">
  </html:form>
  </body>
</html:html>

The javascript method zxcEnableDisable is not called anywhere. You've not registered it as an event as far as I can see. I hope I've not missed anything...

I forgot to add...I have called JS function here <html:select property="ejbType" onchange="zxcEnableDisable(this);">