JavaScript code in a web page that you can see by viewing its source isn't server-side JavaScript. While it does reside on the server, it is passed to the client and executes on the client. Very few web servers use server-side JavaScript (M$ web servers though ASP and Netscape being the two that come to mind) and if they were you wouldn't be able to see the code in action by viewing the source of the web page only by viewing the code that generated the HTML that you are viewing.
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