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.aspxso when a selection is made, it should redirect to mysite.com/default.aspx?key=selectionNo server access, No access to codebehind 
\[code\] <aspropDownList runat="server" id="DropDownList1" DataSourceID="spdatasource1" DataValueField="CategoryName" AutoPostBack="True" Onchange="window.open( Go to some link)"> </aspropDownList>\[/code\]
\[code\] <aspropDownList runat="server" id="DropDownList1" DataSourceID="spdatasource1" DataValueField="CategoryName" AutoPostBack="True" Onchange="window.open( Go to some link)"> </aspropDownList>\[/code\]