将form表单序列化成对象

serializeObject function(form){
  var o = {};
  $.each(form.serializeArray(),function(){
  if(o[this['name']]){
     o[this['name']] = o[this['name']] +"," +this['value'];
  }else{
     o[this['name']] = this['value'];
  }	
  })
  return o;	
}