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<title> new document </title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body>
<span id="content"></span>
<span id="info"></span>
<script type="text/javascript">
function chaLabel(val) {
document.getElementById('info').innerHTML = new Date().getFullYear() + '年' + val + '月';
}
!function(){
var o = document.getElementById('content');
var m = n = new Date().getMonth() + 1;
var html = '<select id="dsel" onchange="chaLabel(this.value)">';
for(var i = 0; i < 3; i++) {
html += '<option value=' + (m++) + '>' + (n++) + '</option>';
}
html += '</select>'
o.innerHTML = html;
}();
</script>
</body>
</html>