<select name="type" onchange="show_sub(this.options[this.options.selectedIndex].value)"> <option value="0">请选择主类别</option> <option value="1">1</option> <option value="2">2</option> </select>
<select name=”type” onchange=”show_sub(this.options[this.…
<select name="type" onchange="show_sub(this.options[this.options.selectedIndex].value)"> <option value="0">请选择主类别</option> <option value="1">1</option> <option value="2">2</option> </select>