/*
JavaScript: A Beginner's Guide, Second Edition
By John Pollock
Publisher: McGraw-Hill,
Published December 2003, 550 pages,
ISBN 0072227907
*/
<HTML>
<HEAD>
<SCRIPT language="JavaScript">
<!--
window.alert("Hi! You are viewing my page with "+navigator.appName);
var hasJava= navigator.javaEnabled()
if (hasJava==true)
window.alert("You have Java enabled, that is cool!");
else
window.alert("No Java? Well, no fun stuff here then.");
window.alert("You are using "+navigator.platform);
//-->
</SCRIPT>
</HEAD>
<BODY>
</BODY>
</HTML>
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