[NikolasGrad]

Как-то так

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"  type="text/javascript"></script>
<script>
$.fn.swap = function (b) {
  $(this).each(function(i){
    var b1 = $(b)[i],
      a2 = $(this).clone(),
      b2 = $(b1).clone();
    $(this).replaceWith(b2);
    $(b1).replaceWith(a2);
  });
};
$(function() {
  $('button').click(function(){
    $(".odd, .odds").swap($(".even, .evens"));
  });
});
</script>
<div class="odd">odd1</div><br />
<div class="even">even1</div><br />
<div class="odd">odd2</div><br />
<div class="even">even2</div><br />
<div class="odd">odd3</div><br />
<div class="even">even3</div><br />
<button>swap</button><br />
<div class="odds">odds1</div><br />
<div class="evens">evens1</div><br />
<div class="odds">odds2</div><br />
<div class="evens">evens2</div><br />
<div class="odds">odds3</div><br />
<div class="evens">evens3</div>