--- loncom/homework/functionplotresponse.pm	2013/12/17 00:33:42	1.105
+++ loncom/homework/functionplotresponse.pm	2015/04/05 17:09:57	1.105.2.2
@@ -1,7 +1,7 @@
 # LearningOnline Network with CAPA
 # Functionplot responses
 #
-# $Id: functionplotresponse.pm,v 1.105 2013/12/17 00:33:42 raeburn Exp $
+# $Id: functionplotresponse.pm,v 1.105.2.2 2015/04/05 17:09:57 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -56,11 +56,8 @@ sub useHTML5 {
     } elsif ($env{'browser.type'} eq 'safari') {
         if ($env{'browser.os'} eq 'mac') {
             my ($prefix,$version) = ($env{'browser.version'} =~ /^(\d*)(\d{3})\./); 
-            if ((!$env{'browser.mobile'}) || 
-                (($env{'browser.mobile'}) && length($prefix))) {
-                if ($version >= 536) {
-                    return 1;
-                }
+            if ($version >= 536) {
+                return 1;
             }
         }
     } elsif ($env{'browser.type'} eq 'mozilla') {
@@ -76,6 +73,10 @@ sub useHTML5 {
         if (($env{'browser.os'} eq 'win') && ($env{'browser.version'} >= 10)) {
             return 1;
         }
+    } elsif ($env{'browser.type'} eq 'opera') {
+        if ($env{'browser.version'} >= 18) {
+            return 1;
+        }
     }
     return 0;
 }