work on post unapproval javascript

public/javascripts/src/app/favorites.js

@@ -4,14 +4,21 @@
   Danbooru.Favorite.initialize_all = function() {
     this.initialize_add_to_favorites();
     this.initialize_remove_from_favorites();
-    this.hide_or_remove_add_to_favorites_link();
+    this.hide_or_show_add_to_favorites_link();
   }
   
-  Danbooru.Favorite.hide_or_remove_add_to_favorites_link = function() {
+  Danbooru.Favorite.hide_or_show_add_to_favorites_link = function() {
     var favorites = $("meta[name=favorites]").attr("content");
-    var current_user = $("meta[name=current-user-id]").attr("content");
-    var regexp = new RegExp("\\bfav:" + current_user + "\\b");
-    if (favorites.match(regexp)) {
+    var current_user_id = $("meta[name=current-user-id]").attr("content");
+    
+    if (current_user_id == "") {
+      $("a#add-to-favorites").hide();
+      $("a#remove-from-favorites").hide();
+      return;
+    }
+    
+    var regexp = new RegExp("\\bfav:" + current_user_id + "\\b");
+    if ((favorites != undefined) && (favorites.match(regexp))) {
       $("a#add-to-favorites").hide();
     } else {
       $("a#remove-from-favorites").hide();      

public/javascripts/src/app/unapprovals.js

@@ -0,0 +1,32 @@
+(function() {
+  Danbooru.Unapproval = {};
+  
+  Danbooru.Unapproval.initialize_all = function() {
+    this.initialize_unapprove();
+  }
+  
+  Danbooru.Unapproval.initialize_unapprove = function() {
+    $("#unapprove-dialog").dialog({
+      autoOpen: false, 
+      width: 400,
+      modal: true,
+      buttons: {
+        "Submit": function() {
+          $("#unapprove-dialog form").submit();
+        },
+        "Cancel": function() {
+          $(this).dialog("close");
+        }
+      }
+    });
+
+    $("a#unapprove").click(function() {
+      $("#unapprove-dialog").dialog("open");
+      return false;
+    });
+  }
+})();
+
+$(document).ready(function() {
+  Danbooru.Unapproval.initialize_all();
+});