Set initial value of dynamic list

$colname_rs_experience = “-1”;
if (isset($_GET[‘id’])) {
$colname_rs_experience = $_GET[‘id’];
}
mysql_select_db($database_con_onedatabase, $con_onedatabase);
$query_rs_experience = sprintf(“SELECT * FROM experience WHERE id = %s”, GetSQLValueString($colname_rs_experience, “int”));
$rs_experience = mysql_query($query_rs_experience, $con_onedatabase) or die(mysql_error());
$row_rs_experience = mysql_fetch_assoc($rs_experience);
$totalRows_rs_experience = mysql_num_rows($rs_experience);