I would like to dynamically insert a javascript call with with data
retrived from the database.

All I am trying to do is dynamically inserting the following <script
type="text/javascript">alert(retrieved_database_id);</script> to a
panel using the ajaxToolkit:DynamicPopulateExtender

Can someone enlighting me where I am going wrong or the best way to go
about what I am trying to achieve.

<ajaxToolkit:DynamicPopulateExtender ID="dp" BehaviorID="dp1"
runat="server" TargetControlID="panel1"
ClearContentsDuringUpdate="true" PopulateTriggerControlID="lbMessage"
ServiceMethod="GetDatabaseId" />

This is what I return from the webmethod:
public static string GetDatabaseId(string contextKey)
{
//Get retrived_database_id

return String.Format("<script  type=\"text/javascript\">alert({0});</
script>", retrived_database_id)
}

Thanks In Advance