$strSQL = "SELECT acc.Username as Username
					,acc.Name as Name
					,acc.Email as Email
					,acc.displayPath as dp FROM account as acc
						INNER JOIN "
                        . "  (SELECT Username FROM friend WHERE (User_F ='".$username."' OR Username='".$username."') AND isFriend ='yes') AS uf "
                        . "  ON acc.Username = uf.Username";