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<html>
<body>
<script language="JavaScript">
<!--
function doMath(){
var inputNum=document.form1.input.value;
var result = Math.abs(inputNum);
document.form1.answer.value = result;
}
-->
</script>
<form name=form1>
This example calculates the absolute value of the number entered.
<br><br>
Enter Number:
<input type="text" name="input" size=10>
<input type="button" value="Calculate" onClick='doMath()'>
<br>
Answer:
<input type="text" name="answer" size=10>
</form>
</body>
</html>
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