OnChange:execute JSP

Question

try to be more clear, i'm in lack of ideas in this problem.
<logic:present name="StateList" scope="session">
<td align="left"><font color="red"><b><b>*</b></b></font> <b>Select State</td>
<td>
<html:select  property="selectedState" onChange="execute(this.form)">
<html:option value="-1">Select</html:option>
<html:options collection="StateList" property="label" labelProperty="value" />
</html:select>
</td>
</tr>
<tr></tr>
</logic:present>     on calling onChange i want to reload this JSP without refreshing parameter.Because On the basis of selected value i have to perform some other features.I am able to do using struts,but i dont want to use struts.
using struts i can do like this:
function execute(frm)
    frm.action="Inedex.do?method=process";
    frm.submit();
}process method is written in Indexaction.java.which is returning my same JSP(return mapping.findforward("this")).where "this" is mapped to Index.jsp and i am attaining my goal.But i dont want to use struts.
I have spend hours trying to play around with this but have got nowhere.
Your help is much appreciated.

Answer 1

Thankyou thankyou very much for reply...
<logicresent name="StateList" scope="session">
<td align="left"><font color="red"><b><b>*</b></b></font> <b>Select State</td>
<td>
<html:select property="selectedState" onChange="execute(this.form)">
<htmlption value="-1">Select</htmlption>
<htmlptions collection="StateList" property="label" labelProperty="value" />
</html:select>
</td>
</tr>
<tr></tr>
</logicresent>After this there is button name "show".
<html:submit property="method" value="Show" onClick="return(checks(this.form))"/>on clicking show button some text message is displayed on this same jsp below show button.(For this i am using hidden variable with value "False" then in "checks method" i am seting its value to "True".on basis of hidden parameter value message is displayed.if this value is false then no message is displayed and if this value is true appropriate message is displayed.)
Problem:
But Now take the case when user change the statelist option then that message should be disappeared while changing the list,without clicking show button
if still i am not clear,let me know.
Waiting for reply..