submit_to_remote and javascript

Hi

   I have a submit_to_remote

<%= submit_to_remote 'save_btn', 'Save', :url => {:controller => 'service_desk', :action => 'sd_resolution_save', :id => @sd_ticket.id, :sd_resolution_id => @sd_resolution_id, :page => params[:page] }%>

But before submiting this I have to call a javascript for form validation ..How can I do this..For example suppose

<script type="text/javascript">

  function check1()   {     alert('text');   } </script>

HOW CAN I CALL THIS?

Sijo