Passing asp.net Eval()  method as parameter in a javascript function on a dropdown list change.

I have a dropdown list that contains action items that replace the command buttons, ie edit, delete, update, replace etc.  When the end-user selects an action item a popup needs to appear to confirm selection and continue action request.  I have a javascript function for which I am passing the object (dropdown list) and can determine the object selected value.  However, I need to also pass a record id as a second parameter using the Eval() method.  I can do this in a hyperlink :   <a href="javascript:openPopup('Details.aspx?INV_ID=<%# Eval("INV_ID") %>')">Replace</a>.  But cannot get the dropdownlist onchange event to accept a parameter of <%# Eval %>, below is the example of what I can get to work without using a second parameter:  onchange="processAction(this)" . I need something similiar to this: onchange="processAction(this, '<%# Eval("INV_ID") %>')" . When using this code the error message is 'The server tag is not well formed'.  Thanks in advance for your assistance.


Passing dropdownlist object in javascript function that does work.
<asp:ItemTemplate>
  <asp:DropDownList ID="ddlAction" runat="server" Width="100px"  onchange="processAction(this)"    AutoPostBack="false"  AppendDataBoundItems="true">
                 <asp:ListItem Value="None">Select Action</asp:ListItem>
                 <asp:ListItem Value="Edit">Edit</asp:ListItem>
                    <asp:ListItem Value="Delete">Delete</asp:ListItem>  
                     <asp:ListItem Value="Activate">Activate</asp:ListItem>
                      <asp:ListItem Value="Deactivate">Deactivate</asp:ListItem>
                       <asp:ListItem Value="Deactivate">Replace</asp:ListItem>
                    </asp:DropDownList>  
                        </ItemTemplate>Start Free Trial