Index: schedule/Module/calendar.php
===================================================================
--- schedule/Module/calendar.php	(revision 16008)
+++ schedule/Module/calendar.php	(revision 16009)
@@ -287,5 +287,5 @@
 								}
 							}
-							xmlhttp.open("GET","http://www.fact-project.org/smartfact/index.php?source="+urlencode(source)+"&time="+year+"-"+month+"-"+day,true);
+							xmlhttp.open("GET","http://www.fact-project.org/smartfact/index.php?source="+escape(source)+"&time="+year+"-"+month+"-"+day,true);
 							xmlhttp.send();
 							$('#Graph').load('chart.php?day='+day+"&month="+month+"&year="+year);