simple way for ajax-form-submit

jquery.simple-submit.js

$(document).ready(function(){
  $("form").submit(function(){
    var thistarget = this.target;
    jQuery.ajax({
      data:    $(this).serialize(),
      url:     this.action,
      type:    this.method,
      error:   function() {
                 $(thistarget).html("Error: Failed to submit form!");
               },
      success: function(results) {
                 $(thistarget).html(results);
               }
    })
    return false;
    }
  );
});