title: javascript onchange event to asp.net dropdownlist
body: <p>Is it possible to make the dropdown list selection trigger posting back to the same page with whatever was selected added to the url as querystring using javascript? The problem is the list is being loaded dynamically from some sharepoint list.
  if my site is mysite.com/default.aspx
  so when a selection is made, it should redirect to mysite.com/default.aspx?key=selection</p>
  
  <p>No server access, No access to codebehind :(</p>
  
  <pre><code> &lt;asp:DropDownList runat="server" id="DropDownList1" DataSourceID="spdatasource1" DataValueField="CategoryName" AutoPostBack="True" Onchange="window.open( Go to some link)"&gt;
                                                   &lt;/asp:DropDownList&gt;
  </code></pre>