<div >
        <input name="name" type="button" onClick="show(1);" value="增加">
</div>
<div id="div1" style="display: none" >
    <input name="name" type="button" onClick="show(2);" value="1">
</div>

<script type="text/javascript">
    function show(v){
        document
 
.getElementById("div" + v).style.display = "";
    }
    function hidden(v){
        v.style.display = "none";
    }
</script>