Index: branches/5.1.x/admin_templates/topics/topics_edit.tpl
===================================================================
diff -u -N -r13094 -r13457
--- branches/5.1.x/admin_templates/topics/topics_edit.tpl	(.../topics_edit.tpl)	(revision 13094)
+++ branches/5.1.x/admin_templates/topics/topics_edit.tpl	(.../topics_edit.tpl)	(revision 13457)
@@ -97,4 +97,8 @@
 	</table>
 </div>
 
+<script type="text/javascript">
+	disable_categories('<inp2:bb_InputName name="CategoryId"/>', <inp2:bb_AllowedCategoriesJSON/>);
+</script>
+
 <inp2:m_include t="incs/footer"/>
\ No newline at end of file