两个DIV的切换
<html>
<head>
<title>HTML元素的显示与隐藏控制</title>
<script type="text/javascript">
function showAndHidden1(){
var div1=document.getElementById("div1");
var div2=document.getElementById("div2");
if(div1.style.display=='block') div1.style.display='none';
else div1.style.display='block';
if(div2.style.display=='block') div2.style.display='none';
else div2.style.display='block';
}
</script>
</head>
<body>
<div>display：元素的位置不被占用</div>
<div id="div1" style="display:block; background:#eee;">DIV 1</div>
<div id="div2" style="display:none; background:#fcc">DIV 2</div>
<input type="button" onclick="showAndHidden1();" value="DIV切换" />
</body>
</html>
