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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script type="text/javascript">
function judge(){
var tag=document.getElementById("mytag").value;
if("myself" == tag){
alert("提交来自自身页面");
}
}
</script>
</head>
<body onload="judge();">
<form action="index.html">
<input type="hidden" value="myself" id="mytag"/>
<input type="submit" value="提交" />
</form>
</body>
</html>