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<html>
<head>
<title>图片切换</title>
<script language="javascript">
function dayChange()
{
for(var x=0;x<document.myForm.chRadio.length;x++)
{
if(document.myForm.chRadio[x].checked)
{
document.mypic.src="img/"+document.myForm.chRadio[x].value
}
}
}
</script>
</head>
<body>
<form name="myFrom">
<input type="radio" onClick="dayChange()" name="chRadio" value="d1.jpg" checked>过新年
<input type="radio" onClick="dayChange()" name="chRadio" value="d2.jpg">元宵节
<input type="radio" onClick="dayChange()" name="chRadio" value="d3.jpg">端午节
<input type="radio" onClick="dayChange()" name="chRadio" value="d4.jpg">中秋节
</form>
<img name="mypic" src="img/d1.jpg">
</body>
</html>
<html>
<head>
<title>图片切换</title>
<script language="javascript">
function dayChange()
{
var rds = document.getElementsByName('chRadio');
var pic = document.getElementById('myPic');
for(var x=0;x<rds.length;x++)
{
if(rds[x].checked)
{
pic.src="img/"+rds[x].value
}
}
}
</script>
</head>
<body>
<form name="myFrom">
<input type="radio" onClick="dayChange()" name="chRadio" value="d1.jpg" checked>过新年
<input type="radio" onClick="dayChange()" name="chRadio" value="d2.jpg">元宵节
<input type="radio" onClick="dayChange()" name="chRadio" value="d3.jpg">端午节
<input type="radio" onClick="dayChange()" name="chRadio" value="d4.jpg">中秋节
</form>
<img id="myPic" name="myPic" src="img/d1.jpg">
</body>
</html>