public static string RenderUserStatus(this UserInfo userInfo)
{
var sb = new StringBuilder();
sb.AppendFormat("<img align=\"absmiddle\" alt=\"\" style=\"margin-right:3px;\" src=\"{0}\"/>", WebImageSupplier.GetAbsoluteWebPath(userInfo.IsOnline() ? "status_online.png" : "status_offline.png"));
sb.AppendFormat("<span class=\"userlink\" onclick=\"ASC.Controls.JabberClient.open('{1}')\">{0}</span>", userInfo.IsOnline() ? Resources.Resource.Online : Resources.Resource.Offline, userInfo.UserName);
return(sb.ToString());
}