hi...

i had an aspx file, which included this code behind:
Response.Write("<script type=\'text/javascript\'>" + "window.open(\'selCols.aspx?bd=" + vidBaseDatos + "&vista=" + vidVista + "\', \'VentanaEmergente\', " + "\'width=800, height=600, scrollbars=yes, resizable=no\')" + "</script>");

it used to open another popup windows, in which i selected some items and save those items...

but since i use AJAX (ScriptManager and UpdatePanels) it gives me a ParserErrorException or somethign like that once it gets to my Response.Write...

how can i get it to work now?
i've read that with ScriptManager.RegisterClientBlock or StartupScript... but when i try it it fails because i use this in my aspx file:
partial class vistas : ExtensionPagina.PaginaBase
and not the system.web.ui page...

so, when i try the above... it stops recognizing me my ScriptManager control...

thanks in advance...