Question : Can you combine A document.ready function like so

Question : Can you combine A document.ready function like so

Can this be done.   I want to call this script below
     
 <script>
  $(document).ready(function(){
    $("#commentForm").validate();
  });
  </script>






then Let  it do what it does, and then end the function (Kill it) so that i can then call this
 
<script>
$(document).ready(function()
{
$("#datepicker").datepicker();
});
</script>




 with out one canceling out the other.or Can these be conbined.
 
also : same question having this in the head
 
 <script src=" http://code.jquery.com/jquery-latest.js"></script>
  <script type="text/javascript" src="http://jzaefferer.github.com/jquery-validation/jquery.validate.js"></script>

and this
 
cancels each other out ??? how can i use them together
 
Thanks andy