jQuery Plugins For Simple Image Gallery

Dear all Developers,
i have try jquery image plugin call " jQuery-Plugins-For-Simple-Image-Gallery-with-Magnifying-Glass-Effect ".
but i got message when view. it doesn’t show image. i don’t know why?
this is my view code

<%= stylesheet_link_tag ‘jquery.simpleGallery.css’ %>
<%= stylesheet_link_tag ‘jquery.simpleLens.css’ %>
<%= javascript_include_tag ‘jquery.simpleGallery.js’ %>
<%= javascript_include_tag ‘jquery.simpleLens.js’ %>

thanks.