diff --git a/app/templates/admin/broadcast.html b/app/templates/admin/broadcast.html
index ad9114f..083246e 100644
--- a/app/templates/admin/broadcast.html
+++ b/app/templates/admin/broadcast.html
@@ -109,16 +109,13 @@
                         </thead>
                         <tbody>
                             {% for b in history %}
-                            <tr style="cursor:pointer;"
-                                onclick="showBroadcast(
-                                    {{ b.id }},
-                                    {{ b.title | tojson }},
-                                    {{ b.body | tojson }},
-                                    {{ b.sent_at.strftime('%b %-d, %Y %I:%M %p') | tojson }},
-                                    {{ (b.sent_by.display_name if b.sent_by else '—') | tojson }},
-                                    {{ b.recipient_count }},
-                                    {{ b.target_roles | tojson }}
-                                )">
+                            <tr class="broadcast-row" style="cursor:pointer;"
+                                data-title="{{ b.title | e }}"
+                                data-body="{{ b.body | e }}"
+                                data-sent-at="{{ b.sent_at.strftime('%b %-d, %Y %I:%M %p') }}"
+                                data-sent-by="{{ (b.sent_by.display_name if b.sent_by else '—') | e }}"
+                                data-recipients="{{ b.recipient_count }}"
+                                data-roles="{{ b.target_roles | tojson | e }}">
                                 <td class="text-nowrap text-muted small">
                                     {{ b.sent_at.strftime('%b %-d, %Y') }}<br>
                                     <span class="text-muted" style="font-size:.75rem;">
@@ -195,17 +192,20 @@
 <script>
 var ROLE_LABELS = {{ role_labels | tojson }};
 
-function showBroadcast(id, title, body, sentAt, sentBy, recipientCount, roles) {
-    document.getElementById('bdTitle').textContent      = title;
-    document.getElementById('bdBody').textContent       = body;
-    document.getElementById('bdSentAt').textContent     = sentAt;
-    document.getElementById('bdSentBy').textContent     = sentBy;
-    document.getElementById('bdRecipients').textContent = recipientCount + ' user(s)';
-    document.getElementById('bdRoles').textContent      = roles.map(function(r) {
-        return ROLE_LABELS[r] || r;
-    }).join(', ');
-    new bootstrap.Modal(document.getElementById('broadcastDetailModal')).show();
-}
+document.querySelectorAll('.broadcast-row').forEach(function(row) {
+    row.addEventListener('click', function() {
+        var roles = JSON.parse(this.dataset.roles);
+        document.getElementById('bdTitle').textContent      = this.dataset.title;
+        document.getElementById('bdBody').textContent       = this.dataset.body;
+        document.getElementById('bdSentAt').textContent     = this.dataset.sentAt;
+        document.getElementById('bdSentBy').textContent     = this.dataset.sentBy;
+        document.getElementById('bdRecipients').textContent = this.dataset.recipients + ' user(s)';
+        document.getElementById('bdRoles').textContent      = roles.map(function(r) {
+            return ROLE_LABELS[r] || r;
+        }).join(', ');
+        new bootstrap.Modal(document.getElementById('broadcastDetailModal')).show();
+    });
+});
 
 (function () {
     var textarea = document.getElementById('body');