How to assign java script variable to a hidden parameter in JSP?

Hi All,
I want to assign the variable in the Jscript to a hidden parameter in JSP page.
<select name="sortingOption" class="sortingOptions" onchange="changeSortOption(this)">
<c:forEach var="sortingOption" items="${sortingOptionList}">
<c:set var="sortingOptionValue" value="${sortingOption}" target="java.lang.String"/>
<c:choose>
<c:when test="${sortingOptionValue == sortingOptionValueFromRequest}">
<option value="${sortingOptionValue}" selected="selected">${sortingOptionValue}</option>
<input type="hidden" name="srchType" value="none"/>
</c:when>
<c:otherwise>
<option value="${sortingOptionValue}">${sortingOptionValue}</option>
</c:otherwise>
</c:choose>
</c:forEach>
</select>
In changeSortOption script,they capture the value selected by the user and then they submit the form.I want to assign that value to a hidden parameter in JSP,can someone tell me how to do that?
I dont have the Jscript code with me right now to post here.

To the point: just by accessing/manipulating the HTML DOM using JS. Learn JS and HTML DOM. There are basic tutorials at w3schools.com. Besides, your code syntax is still invalid. The input hidden elemend doesn't belong in a select element. Learn HTML. There's a basic tutorial at w3schools.com as well.
For future HTML/JS problems please consult the appropriate forums. This has not much to do with JSP. There are ones at webdeveloper.com.

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As u can see i have extracted emp_id from the employee_info table and populated it in my drop down list
In the javascript i have used a variable "where_to" which keeps track of what the user has selected in the drop down list
I want to use this value of "where_to" in some other other jsp(say Admin.jsp) to carry out an insert query
how can i retrieve this value of "where_to" from Admin.jsp so that i can carry out my insert query
Thanx in advance i certainly hope that u will help me

I made these changes in my Guest.jsp page(as u mentioned):
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I dont know why but when i select one of the emp_id from the drop down list and press submit it does not show anything
I can see the value of "UserList" in the url which is correct
Probably there is some problem in my Admin.jsp page
Please find time to have a look at my code
Help would be really appreciated
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