Ajax tilføjer hele siden.

JScript kode 

 $('form.form').on('submit', function(){
     var that = $(this),
         url = that.attr('action'),
         type = that.attr('method'),
         data = {};
     
     that.find('[name]').each(function(index, value){
         var that = $(this),
             name = that.attr('name'),
             value = that.val();
         
         data[name] = value;
     });
     
     $.ajax({
         url: url,
         type: type,
         data: data,
         success: function(response) {
             $(".form").append(response);
         }
     });
 
     return false;
 });