[B@rmaley.e><e]

Всё работает

<script src="http://code.jquery.com/jquery-1.6.2.min.js"></script>
<form>lalala</form>
<form id="zxc" name="zxc">
<input type="checkbox" name="ch1" value="lalala1" checked />
<input type="checkbox" name="ch2" value="lalala2" checked />
<input type="checkbox" name="ch3" value="lalala3" />
<input type="checkbox" name="ch4" value="lalala4" />
<input type="checkbox" name="ch5" value="lalala5" checked />
</form>
<div id="results6"></div>
<script>
    function er() {
      var str = $("#zxc").serialize();
      $("#results6").text(str);
    }
    $(":checkbox, :radio").click(er);
   
    er();
</script>