diff --git a/lib/nyaplot/core.rb b/lib/nyaplot/core.rb
index 7d5b4ce..a5b1530 100644
--- a/lib/nyaplot/core.rb
+++ b/lib/nyaplot/core.rb
@@ -11,16 +11,6 @@ def self.extension_lists
     @@extension_lists
   end
 
-  def self.init_iruby
-    raise "IRuby notebook is not loaded." unless defined? IRuby
-
-    path = File.expand_path("../templates/init.html.erb", __FILE__)
-    template = File.read(path)
-    dep_libraries = @@dep_libraries
-    html = ERB.new(template).result(binding)
-    return IRuby.html(html)
-  end
-
   def self.add_extension(name)
     @@extension_lists.push(name)
   end
@@ -28,4 +18,14 @@ def self.add_extension(name)
   def self.add_dependency(name, url)
     @@dep_libraries[name]=url;
   end
+
+  def self.init_iruby
+    path = File.expand_path("../templates/init.js.erb", __FILE__)
+    template = File.read(path)
+    dep_libraries = @@dep_libraries
+    js = ERB.new(template).result(binding)
+    IRuby.display(IRuby.javascript(js))
+  end
+
+  init_iruby if defined? IRuby
 end
diff --git a/lib/nyaplot/frame.rb b/lib/nyaplot/frame.rb
index 508ccbe..6fdb3cb 100644
--- a/lib/nyaplot/frame.rb
+++ b/lib/nyaplot/frame.rb
@@ -27,16 +27,19 @@ def export_html
       template = File.read(path)
       model = self.to_json
       html = ERB.new(template).result(binding)
-      return html
+      html
     end
 
-    def show
+    def to_iruby
       path = File.expand_path("../templates/iruby.erb", __FILE__)
       template = File.read(path)
       id = SecureRandom.uuid()
       model = self.to_json
-      html = ERB.new(template).result(binding)
-      return IRuby.html(html)
+      ['text/html', ERB.new(template).result(binding)]
+    end
+
+    def show
+      IRuby.display(self)
     end
 
     def configure(&block)
diff --git a/lib/nyaplot/plot.rb b/lib/nyaplot/plot.rb
index fe2a5ab..0d7048d 100644
--- a/lib/nyaplot/plot.rb
+++ b/lib/nyaplot/plot.rb
@@ -27,10 +27,12 @@ def add_with_df(df, type, *labels)
       return diagram
     end
 
+    def to_iruby
+      Frame.new.tap {|f| f.add(self) }.to_iruby
+    end
+
     def show
-      frame = Frame.new
-      frame.add(self)
-      frame.show
+      Frame.new.tap {|f| f.add(self) }.show
     end
 
     def df_list
diff --git a/lib/nyaplot/templates/init.html.erb b/lib/nyaplot/templates/init.js.erb
similarity index 98%
rename from lib/nyaplot/templates/init.html.erb
rename to lib/nyaplot/templates/init.js.erb
index f7142cd..9ec8343 100644
--- a/lib/nyaplot/templates/init.html.erb
+++ b/lib/nyaplot/templates/init.js.erb
@@ -1,4 +1,3 @@
-<script>
 if(window['d3'] === undefined ||
    window['Nyaplot'] === undefined){
     var path = <%= dep_libraries.to_json %>;
@@ -36,4 +35,3 @@ end
 %>
 <%= str %>
 }
-</script>
diff --git a/lib/nyaplot/templates/iruby.erb b/lib/nyaplot/templates/iruby.erb
index fa30412..582bec7 100644
--- a/lib/nyaplot/templates/iruby.erb
+++ b/lib/nyaplot/templates/iruby.erb
@@ -8,7 +8,8 @@
     if(window['Nyaplot']==undefined){
         window.addEventListener('load_nyaplot', render, false);
 	return;
+    } else {
+       render();
     }
-    render();
 })();
 </script>