Have tried numerous solutions and nothing has worked. I'm pretty sure that Javascript is required to get this functional.
Thanks for your help!
Here is the code for file Search.aspx
===BEGIN
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="search.aspx.cs" Inherits="SearchApp.search" MasterPageFile="~/Site1.Master" EnableViewState="true"%>
<asp:Content ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<fieldset>
<legend style="text-align:center;"><b>Make Atleast one or multiple selections from one of the following categories</b></legend>
<div class="wrapp ...
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