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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>单选按钮，双击取消选中</title>
<script language="javascript" type="text/javascript">
window.onload = function() {
// setRadio("myDiv", "form1", "alreadySelected");
var radios = document.getElementsByTagName("input");
for (var i = 0; i < radios.length; i++) {
if (radios[i].type == "radio") {
radios[i].ondblclick = function() {
this.checked = false;
}
}
}
}
</script>
</head>
<body>
A:<input type="radio" name="rad" value="0" />
B:<input type="radio" name="rad" value="1" />
C:<input type="radio" name="rad" value="2" />
D:<input type="radio" name="rad" value="3" />
</body>
</html>