fixes #1390

app/assets/javascripts/posts.js

@@ -133,6 +133,31 @@
       $("#post_tag_string").trigger("focus");
       e.preventDefault();
     });
+
+    $("#parent-relationship-preview").hide();
+    $("#child-relationship-preview").hide();
+
+    $("#parent-relationship-preview-link").click(function(e) {
+      $("#parent-relationship-preview").toggle();
+      if ($("#parent-relationship-preview").is(":visible")) {
+        $(this).html("« hide");
+      }
+      else {
+        $(this).html("show »");
+      }
+      e.preventDefault();
+    });
+
+    $("#child-relationship-preview-link").click(function(e) {
+      $("#child-relationship-preview").toggle();
+      if ($("#child-relationship-preview").is(":visible")) {
+        $(this).html("« hide");
+      }
+      else {
+        $(this).html("show »");
+      }
+      e.preventDefault();
+    });
   }
 
   Danbooru.Post.initialize_favlist = function() {

app/assets/stylesheets/specific/posts.css.scss

@@ -128,6 +128,7 @@ div#c-posts {
     font-size: 0.8em;
     padding: 1em;
     margin-bottom: 1em;
+    overflow: hidden;
 
     ul {
       margin-left: 1em;