diff --git a/atlas/templates/atlas/collection_viva.html b/atlas/templates/atlas/collection_viva.html
index deeedbb8..c1832990 100644
--- a/atlas/templates/atlas/collection_viva.html
+++ b/atlas/templates/atlas/collection_viva.html
@@ -6,8 +6,8 @@
         {% for case in cases %}
             <li data-question_pk={{case.pk}}>Case {{forloop.counter}}: {{case.title}} &nbsp;
 
-                 <button class="show-case no-padding" data-title="{{case.title}}" data-target="https://viewer.penracourses.org.uk/viewer/dicomjson?url=https://www.penracourses.org.uk{% url 'atlas:case_dicom_json' case.pk %}">Show</button>
-                 <button class="open-case no-padding" data-title="{{case.title}}" data-target="https://viewer.penracourses.org.uk/viewer/dicomjson?url=https://www.penracourses.org.uk{% url 'atlas:case_dicom_json' case.pk %}">Open</button>
+                 <button class="show-case no-padding" data-title="{{case.title}}" data-target="https://www.penracourses.org.uk/ohif/viewer/dicomjson?url=https://www.penracourses.org.uk{% url 'atlas:case_dicom_json' case.pk %}">Show</button>
+                 <button class="open-case no-padding" data-title="{{case.title}}" data-target="https://www.penracourses.org.uk/ohif/viewer/dicomjson?url=https://www.penracourses.org.uk{% url 'atlas:case_dicom_json' case.pk %}">Open</button>
             </li>
 
         {% endfor %}
@@ -30,16 +30,16 @@ var win2 = false;
             console.log('clicked', url)
             $('#case-title').text($(this).data('title'));
             $('#viewer').attr('src', url)
-            //if (win2 == false || win2.closed) {
-            //    win2 = openSecondaryWindow(url);
-            //    console.log('opened', win2)
-            //} else {
-            //    win2.location.href = url
-            //}
         });
         $('.open-case').click(function() {
             var url = $(this).data('target');
-            win2 = openSecondaryWindow(url);
+            if (win2 == false || win2.closed) {
+                win2 = openSecondaryWindow(url);
+                console.log('opened', win2)
+            } else {
+                win2.location.href = url
+            }
+            //win2 = openSecondaryWindow(url);
         })
     });
 function openSecondaryWindow(url) {