gistfile1.txt

  :javascript
    yepnope({
      test: Modernizr.input.placeholder,
      nope: '/javascripts/h5f.min.js',
      callback: function(url, result, key) {
        H5F.setup(document.getElementById("new_comment"));
      }
    });

  = simple_form_for Comment.new(:commentable => @obj) do |f|
    .block_body
      = f.input :comment, :placeholder => 'Post your comment'
      = f.button :submit