Java script with jsp

hello friends,.
please help me !! May i know how to retrieve values from list box in java script to jsp and store them in database..i am doing a project Employee Management system....
please give me ideas .....

thank you very much sir.......
i have a combo box in java script having employee skills, if the employee select his skills and click on submit, the values should be stored in the database of the particular employee through JSP..
the code that i have did is...
<%
String s1=(String)session.getAttribute("eid");
String s2[]=request.getParameterValues ("menu2");
int i=0;
%>
<%
try
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con=DriverManager.getConnection("jdbc:odbc:empl2");
PreparedStatement prep=con.prepareStatement("update skill(menu2) values(?) where eid=?");
// prep.setString(1,s2);
prep.setString(2,s1);
i=prep.executeUpdate();
con.close();
catch(Exception e)
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body >
<center><h4><u> Employee Assessment Application</u></h4></center>
<%
if(i>0)
%>
Your skills had been updated !!!!!
<%
else
%>
not updated
<%
%>
<br>Best of Luck
<h4><u>Back</h4>
</body>
</html>
But the values are not getting stored....what to do
thanx in advance

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