<html>
<body>
<script language="JavaScript">
function function1() {
var myC = document.getElementById("myTable").createCaption();
myC.innerText = "This is the new caption text";
}
</script>
<table id="myTable" border="3" cellpadding="5" style="border-color:blue">
<tr>
<th>This table has no caption</th>
</tr>
</table>
<input type="button" value="Add caption" onclick="function1();">
</body>
</html>
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