<script src="jquery-1.4.4.js"></script>
<script>
$(function(){
  $("#results").append( "<tt>" + $("form").serialize() + "</tt>" );
});
</script>
<p id="results"><b>Results: </b> </p>
<form>
 <select name="single">
  <option>Single</option>
  <option>Single2</option>
 </select>
 <select name="multiple" multiple="multiple">
  <option selected="selected">Multiple</option>
  <option>Multiple2</option>
  <option selected="selected">Multiple3</option>
 </select><br/>
 <input type="checkbox" name="check" value="check1"/> check1
 <input type="checkbox" name="check" value="check2" checked="checked"/> check2
 <input type="radio" name="radio" value="radio1" checked="checked"/> radio1
 <input type="radio" name="radio" value="radio2"/> radio2
</form>

$.ajax({
   type: "POST",
   url: url,
   data: $('#form1').serialize(),
   success: function(msg){
    alert( "Data Saved: " + msg );
   }
});