The onFocus event handler fired when focus is made on that particular text area.
<html>
<head>
<script language="JavaScript">
<!--
var counter = 0;
function sendAway(){
document.myForm.myTextArea2.focus();
document.myForm.counter.value = counter++;
}
-->
</script>
</head>
<body onLoad='sendAway()'>
<form name="myForm">
<textarea name="myTextArea1" rows=2 cols=50 onFocus='sendAway()'>
Here is some text in my text area.
</textarea>
<textarea name="myTextArea2" rows=2 cols=50>
Here is some text in my text area.
</textarea>
<br>
<input type=TEXT size=2 value="" name="counter">
</form>
</body>
</html>