<%= link_to image_tag(url_to_avatar(User.current), :width => "33", :height => "33"), user_path(User.current), :alt => "用户头像" %>

<%= form_for @reply, :as => :reply, :url => {:action => 'reply', :id => @topic}, :html => {:multipart => true, :id => 'new_form'} do |f| %>

<% end%>