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<html>
<head>
<title>Required Field</title>
<script type="text/javascript">
window.onload=setupEvents;
function setupEvents(evnt) {
document.someForm.text2.onblur=checkRequired;
}
function checkRequired (evnt) {
evnt = evnt ? evnt : window.event;
var target = evnt.target ? evnt.target : evnt.srcElement;
var txtInput = target.value;
if (txtInput == null || txtInput == "") {
document.write("value is required in field");
}
}
</script>
</head>
<body>
<form name="someForm">
<input type="text" name="text1" /><br />
<input type="password" name="text2" /><br />
<input type="hidden" name="text3" value="hidden value" />
<textarea name="text4" cols=50 rows=10>The text area</textarea>
<input type="submit" value="Submit" />
</form>
</body>
</html>
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