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<script type="text/javascript">
function shownext(obj) {
if (obj) {
document.getElementById('firstbox').style.display = 'block';
document.getElementById('nextbox').style.display = 'none';
}
else {
document.getElementById('firstbox').style.display = 'none';
document.getElementById('nextbox').style.display = 'block';
}
}
</script>
……
<body>
<div style=" position:relative;top:300px;left:200px;">
<div id='firstbox' style='height:100px;background-color:Red;position:absolute;top:0px;left:0px;'></div>
<div id='nextbox' style='height:100px;background-color:Blue; display:none;position:absolute;top:0px;left:0px;'></div>
<input id='btnfirst' type="button" value='上一步' onclick='shownext(true)' />
<input id='btnnext' type="button" value='下一步' onclick='shownext(false)' /></div>
</body>
……
<html>
<head>
<script type="text/javascript">
function shownext(obj) {
if (obj) {
document.getElementById('firstbox').style.display = 'block';
document.getElementById('nextbox').style.display = 'none';
}
else {
document.getElementById('firstbox').style.display = 'none';
document.getElementById('nextbox').style.display = 'block';
}
}
</script>
</head>
<body>
<div style=" position:relative;top:300px;left:200px;">
<div id='firstbox' style='height:100px;background-color:Red;'></div>
<div id='nextbox' style='height:100px;background-color:Blue; display:none;'></div>
<input id='btnfirst' type="button" value='上一步' onclick='shownext(true)' />
<input id='btnnext' type="button" value='下一步' onclick='shownext(false)' /></div>
</body>
</html>