Index: openacs-4/packages/calendar-portlet/www/calendar-portlet.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/calendar-portlet/www/calendar-portlet.tcl,v
diff -u -r1.28.2.1 -r1.28.2.2
--- openacs-4/packages/calendar-portlet/www/calendar-portlet.tcl	7 Sep 2005 01:32:28 -0000	1.28.2.1
+++ openacs-4/packages/calendar-portlet/www/calendar-portlet.tcl	7 Sep 2005 01:35:26 -0000	1.28.2.2
@@ -150,8 +150,8 @@
 	    set next_link "<a href=?view=month&date=\$ansi_date&page_num=$page_num><img border=0 src=[dt_right_arrow] alt=\"forward one month\"></a>"
 	}
     }
-    if { [exists_and_not_null previous_link] } { set prev_month_template $previous_link }
-    if { [exists_and_not_null next_link] } { set next_month_template $next_link }
+    if { [info exists previous_link] } { set prev_month_template $previous_link }
+    if { [info exists next_link] } { set next_month_template $next_link }
 }
 
 if {$view == "list"} {