解决版权符号问题

app/views/layouts/_base_footer.html.erb

@@ -10,7 +10,7 @@
     <span><%=l(:label_organizers)%></span>
     <span class="footer_text_link"><%= link_to l(:label_organizers_information),"http://www.nudt.edu.cn/ArticleShow.asp?ID=47",:target=>"_blank"%></span>
     <span class="footer_text_link"><%= link_to l(:label_organizers_information_institute), "http://www.nudt.edu.cn/ArticleShow.asp?ID=41", :target => "_blank" %></span>
-    <span id="copyright"><%=l(:label_copyright)%>@2007~2014</span>
+    <span id="copyright"><%=l(:label_copyright)%>©2007~2014</span>
     <span id="contact_us" class="footer_text_link"><%= link_to l(:label_contact_us),"http://" + Setting.host_name + "/projects/2/member", :target=>"_blank" %></span>
     <span id="record"class="footer_text_link"><%= link_to l(:label_record),"http://www.miibeian.gov.cn/", :target => "_blank" %></span>