redirect link is not working

index.rhtml
<%= form_tag %>
    select category : <%= select 'treatmentphase', 'cats' ,
Treatmentcategories.find(:all).collect {|l|[l.name, l.id ]}%><br/>
    phase : <%= text_field 'treatmentphase', 'phase'%><br>
    Comments : <%= text_area 'treatmentphase','comments'%>
    <%= submit_to_remote 'button', 'Save', :url => {:action =>
'savephase'} %>
    <%= submit_to_remote 'button', 'Save & More', :url => {:action =>
'saveandmore'} %>
    <%= end_form_tag%>