【form】
<html>
<head>
<script type="text/javascript" language="javascript">
function SetFocus(){
document.SimpleForm.FirstInput.focus();
}
function FindMaxAndMin(){
SetFocus();
}
</script>
</head>
<body onload="SetFocus()">
<form name="SimpleForm">
First number:<input name="FirstInput" type="text">
Second number:<input name="SecondInput" type="text">
Third number:<input name="ThirdInput" type="text">
<button type="Button" onclick="FindMaxAndMin()"> Click to calculate</button>
</form>
</body>
</html>
