I have a partial this is setup like this for a method in controller "X"

_login.rhtml:
<% form_tag do %>
<p>Please log in.</p>
<p>
  <label>Username:</label>
  <%= text_field_tag 'login' %>
</p>
<p>
  <label>Password:</label>
  <%= password_field_tag 'password' %>
</p>
<p><%= submit_tag 'login' , :controller => 'account', :action => 'login' %></p>
<p><%= submit_tag 'Lost Password', :controller => 'account', :action => 'lost_password' %></p>
<% end %>

And is being rendered by a method in controller "Y" withing a different view like so:
<%= render :partial => 'account/login' %>

On pressing submit, on the partial, the request that goes out is:
 Parameters: {"commit"=>"login", "authenticity_token"=>"09f0ebf284cf1480471b93ef1d94f0f0e88d667b", "action"=>"index", "controller"=>"home", "password"=>"kuta", "login"=>"hkhan"}

The question is why does the controller name not change from home to account?????