<html>
<head>
<script language="JavaScript">
function goAccept() {
document.all.myB.accept = "image/gif";
}
</script>
</head>
<body onLoad="goAccept();">
<input type="text"
name="textfield"
size="50"
accept="image/gif"
value='The content type of this field is "text/html"'>
<input type="button"
id="myB"
value='The content type for this button is "image/gif"'>
</body>
</html>