--- a/include/common-transit.inc.php
+++ b/include/common-transit.inc.php
@@ -20,20 +20,21 @@
     'saturday',
     'weekday'
 );
-function service_period_day ($spid) {
-    $idParts = explode("-",$spid);
-        return strtolower($idParts[2]);
-}
+
 function service_period($date = "") {
 
-    if (isset($_SESSION['service_period']))
-        return $_SESSION['service_period'];
+    if (isset($_REQUEST['service_period'])) {
+        return $_REQUEST['service_period'];
+    }
+
     $override = getServiceOverride($date);
-    if ($override['service_id']) {
-        return service_period_day ($override['service_id']);
-    }
-
-    switch (date('w', ($date != "" ? $date : time()))) {
+    if (isset($override['service_id'])) {
+        return strtolower($override['service_id']);
+    }
+    $date = ($date != "" ? $date : time());
+    $dow = date('w', $date);
+
+    switch ($dow) {
         case 0:
             return 'sunday';
         case 6:
@@ -42,19 +43,28 @@
             return 'weekday';
     }
 }
-function service_ids($service_period) {
+
+function service_ids($service_period, $date = "") {
     switch ($service_period) {
         case 'sunday':
-            return Array("2010-TUGGSUN-Sunday-20","2010-BELCSUN-Sunday-19");
+            return Array("Sunday", "Sunday");
         case 'saturday':
-            return Array("2010-BELCSAT-Saturday-19","2010-TUGGSAT-Saturday-19");
+            return Array("Saturday", "Saturday");
         default:
-            //return 'weekday';
-            return Array("2010-BELCMAST-Weekday-15","2010-TUGGMAST-Weekday-14"); 
-    }
-}
+            $date = ($date != "" ? $date : time());
+// school holidays
+            $ymd = date('Ymd', $date);
+            $dow = date('w', $date);
+            if (intval($ymd) < "20120203" && $dow != 0 && $dow != 6) {
+                return Array("Weekday-SchoolVacation", "Weekday-SchoolVacation");
+            } else {
+                return Array("Weekday", "Weekday");
+            }
+    }
+}
+
 function valid_service_ids() {
-    return array_merge(service_ids(""),service_ids('saturday'),service_ids('sunday'));
+    return array_merge(service_ids(""), service_ids('saturday'), service_ids('sunday'));
 }
 
 function midnight_seconds($time = "") {