Rails - Jun 2006 - Ajax not working on ie and konkeror

My ajax code does not work on ie and konkeror. It does work on firefox.
The code is
<%= link_to_remote(  "Add Another",
                      :update => "event_times",
                      :url => { :action => :add_time , :indice => 
@indice, :date_start_day=>@datetime.start_date},
                      :position => :bottom,
                      :complete =>
"Element.hide(''add_time" +
@indice.to_s + "'')") %>

Does anyone know what is the problem?
thanks

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