Index: schedule/Module/calendar.php
===================================================================
--- schedule/Module/calendar.php	(revision 15759)
+++ schedule/Module/calendar.php	(revision 15760)
@@ -57,5 +57,5 @@
 		                  var year =this.selection.print("%Y").join("\n");				  
 							var newline = [];	
-							var newdata;
+							var newdata = [];
 							var xmlhttp;
 							if (window.XMLHttpRequest)