diff --git a/lib/zoomifier_helper.rb b/lib/zoomifier_helper.rb
index 6cb94ab..413e325 100644
--- a/lib/zoomifier_helper.rb
+++ b/lib/zoomifier_helper.rb
@@ -2,11 +2,14 @@ module Zoomifier
   module ViewHelpers
     def zoomify_image_tag(source, options = {})
       raise ArgumentError unless [:id, :width, :height].all? {|o| options[o] }
+      if File.file?(path = RAILS_ROOT + '/public/images/' + source)
+        Zoomifier::zoomify(path)
+      end
       s = content_tag :div, { :id => options[:id] } do
         image_tag source, options.merge({ :id => nil })
       end
       zoomify_path = image_path(source).gsub(/\.[^.]+$/, '')
-      s += javascript_tag "swfobject.embedSWF('/swf/zoomifyViewer.swf', '#{options[:id]}', '#{options[:width]}', '#{options[:height]}', '9.0.0', false, { zoomifyImagePath: '#{zoomify_path}/' });"
+      s += javascript_tag "swfobject.embedSWF('/swfs/zoomifyViewer.swf', '#{options[:id]}', '#{options[:width]}', '#{options[:height]}', '9.0.0', false, { zoomifyImagePath: '#{zoomify_path}/' });"
       s
     end
   end
diff --git a/spec/zoomifier_helper_spec.rb b/spec/zoomifier_helper_spec.rb
index 7fcf2dd..4728df9 100644
--- a/spec/zoomifier_helper_spec.rb
+++ b/spec/zoomifier_helper_spec.rb
@@ -19,9 +19,6 @@ end
 describe Zoomifier::ViewHelpers, "when included into ActionView" do
   before(:all) do
     ActionView::Base.send :include, Zoomifier::ViewHelpers
-  end
-
-  before(:each) do
     @view = ActionView::Base.new
   end
 
@@ -37,7 +34,16 @@ describe Zoomifier::ViewHelpers, "when included into ActionView" do
     @view.zoomify_image_tag('foo.jpg', { :id => 'foo', :alt => 'Foo Bar', :width => 800, :height => 500 }).should ==
       '<div id="foo"><img alt="Foo Bar" height="500" src="/images/foo.jpg" width="800" /></div>' +
       "<script type=\"text/javascript\">\n//<![CDATA[\n" +
-      "swfobject.embedSWF('/swf/zoomifyViewer.swf', 'foo', '800', '500', '9.0.0', false, { zoomifyImagePath: '/images/foo/' });\n//]]>\n" +
+      "swfobject.embedSWF('/swfs/zoomifyViewer.swf', 'foo', '800', '500', '9.0.0', false, { zoomifyImagePath: '/images/foo/' });\n//]]>\n" +
       '</script>'
   end
+
+  it "should automatically zoomify an image" do
+    FileUtils.copy(File.dirname(__FILE__) + '/data/1024x768.jpg', RAILS_ROOT + '/public/images/')
+    File.directory?(RAILS_ROOT + '/public/images/1024x768/').should be_false
+    @view.zoomify_image_tag('1024x768.jpg', {:id => 'foo', :alt => 'Foo Bar', :width => 400, :height => 300 })
+    File.directory?(RAILS_ROOT + '/public/images/1024x768/').should be_true
+    FileUtils.rm_rf(RAILS_ROOT + '/public/images/1024x768/')
+    File.delete(RAILS_ROOT + '/public/images/1024x768.jpg')
+  end
 end