protected void hdnButton_Click(object sender, EventArgs e)
    {
        if (Validate())
        {
            // Get selected item information
            Hashtable properties = GetItemProperties();

            // Get JavaScript for inserting the item
            string script = CMSDialogHelper.GetAnchorItem(properties);
            if (!string.IsNullOrEmpty(script))
            {
                ScriptHelper.RegisterStartupScript(Page, typeof(Page), "insertItemScript", ScriptHelper.GetScript(script));
            }
        }
    }