Index: openacs-4/packages/calendar/www/cal-item-view.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/calendar/www/cal-item-view.tcl,v
diff -u -N -r1.24 -r1.25
--- openacs-4/packages/calendar/www/cal-item-view.tcl	6 Mar 2009 23:28:05 -0000	1.24
+++ openacs-4/packages/calendar/www/cal-item-view.tcl	27 Oct 2014 16:41:08 -0000	1.25
@@ -5,7 +5,7 @@
     @creation-date April 09, 2002
     @cvs-id $Id$
 } {
-    cal_item_id:integer
+    cal_item_id:naturalnum,notnull
     {return_url [ad_return_url]}
 }
 
@@ -18,7 +18,7 @@
 
 # Honor the related link redirection facility long implemented in acs-events, but
 # ignored by calendar.
-if { $cal_item(redirect_to_rel_link_p) eq "t" &&
+if { $cal_item(redirect_to_rel_link_p) == "t" &&
      $cal_item(related_link_url) ne "" } {
     ad_returnredirect $cal_item(related_link_url)
     ad_script_abort