<html>
<body>
<script language="vbscript">
<!--
Sub sub1
msgbox Ucase(document.all.txt1.value)
End Sub
Sub sub2
msgbox Lcase(document.all.txt1.value)
End Sub
-->
</script>
<input type="text" id=txt1 value="abcXYZ">
<input type="button" value="大文字" onclick="sub1">
<input type="button" value="小文字" onclick="sub2">
</body>
</html>
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