<%= form_tag(signin_path,:id=>'main_login_form',:method=>'post') do %>
<%= back_url_hidden_field_tag %>
<%= text_field_tag 'username', params[:username], :tabindex => '1' ,
:class=>'loginSignBox',:placeholder=>'请输入邮箱地址或昵称'%>
<% if Setting.openid? %>
<%= text_field_tag "openid_url", nil, :tabindex => '3',:placeholder=>'请输入OpenId URL' %>
<% end %>
<%= password_field_tag 'password', nil, :tabindex => '2',:class=>'loginSignBox' ,:placeholder=>'请输密码'%>
<% end %>