Index: event_timezones.inc
===================================================================
RCS file: /cvs/drupal/contributions/modules/event/event_timezones.inc,v
retrieving revision 1.4.2.3
diff -u -u -F^function -r1.4.2.3 event_timezones.inc
--- event_timezones.inc	22 May 2006 13:35:07 -0000	1.4.2.3
+++ event_timezones.inc	28 Aug 2006 05:34:44 -0000
@@ -189,6 +189,28 @@ function event_zonelist() {
   return $zones;
 }
 
+/**
+ * Get a DST-adjusted timezone adjustment for a given timezone offset and timestamp. If 
+ * there is no known zone or no offset, will just return the value of 
+ * $original_offset.
+ * @param $original_offset The original, unadjusted timezone offset.  Must be one 
+ * of the offsets valid for event_timezone_map() function, and the map used 
+ * therein.
+ * @param $the_timestamp The timestamp of the event - this is used to 
+ * determine whether the offset needs to be adjusted for DST.
+ * @return 
+ */
+
+function event_get_dst_adjusted_offset($original_offset, $the_timestamp) {
+    $zid = event_timezone_map($original_offset);
+    if ($zid) {
+        return event_get_offset($zid, $the_timestamp);
+    } else {
+        watchdog('event', "Unable to find timezone for offset $original_offset - is site timezone setting valid? ");
+        return $original_offset;
+    }
+}
+
 function event_get_offset($zid, $timestamp) {
   $zones = event_get_timezones();
   $zone = $zones[$zid];