Fix for trentrichardson#588 DST bug

Author: trentrichardson

jquery-ui-timepicker-addon.js

@@ -1589,7 +1589,11 @@
 		// object will only return the timezone offset for the current locale, so we 
 		// adjust it accordingly.  If not using timezone option this won't matter..
 		// If a timezone is different in tp, keep the timezone as is
-		if(tp_inst && tp_inst.timezone != null){
+		if(tp_inst){
+			// look out for DST if tz wasn't specified
+			if(tp_inst._defaults.timezone === null){
+				tp_inst.timezone = tp_date.getTimezoneOffset()*-1;
+			}
 			date = $.timepicker.timezoneAdjust(date, tp_inst.timezone);
 			tp_date = $.timepicker.timezoneAdjust(tp_date, tp_inst.timezone);
 		}