var selectTag = document.searchFm.tid; selectTag.options.length=0 selectTag.options.add(new Option("--选择大类--","")); selectTag.options.add(new Option("影音导航","1")); selectTag.options.add(new Option("美容养护","2")); selectTag.options.add(new Option("外饰用品","3")); selectTag.options.add(new Option("安全辅助","4")); selectTag.options.add(new Option("改装配件","5")); selectTag.options.add(new Option("电子电器","6")); selectTag.options.add(new Option("内饰精品","7")); selectTag.options.add(new Option("自驾游装备","8")); selectTag.options.add(new Option("汽车通讯","9")); selectTag.options.add(new Option("维修项目","10")); selectTag.options.add(new Option("保养项目","11")); selectTag.options.add(new Option("车身改色","2412"));