<script>
function toggle(btn,id) {
document.getElementById(id).style.display = btn.value == '最小化' ? 'none' : 'block';
btn.value = btn.value == '最小化' ? '最大化' : '最小化'
}
</script>
<input type="button" value="最小化" onclick="toggle(this,'dv')" /><br />
<div id="dv" style="border:solid 1px #000;height:100px"></div>
<input type="button" value="最小化" onclick="toggle(this,'dv1')" /><br />
<div id="dv1" style="border:solid 1px #000;height:100px"></div>
