[kumaraj]

The other day I was shocked to find a site which had not updated its copyright symbol since 1999. It still read:
Copyright 1990-1999.

So I came up with a small script which will automatically change the year, therefore your site is copyrighted all the time and updated.

Before we begin you need to know:
HTML
Javascript

Firstly create a new Javascript Source Sheet, called, copyright.js

In this source sheet this is what to do:

var time=newDate();
var year=time.getYear();
if (year < 2000)
year = year + 1900;

This declares the date, which means we just have to insert the text.

document.write("Copyright &copy 2009 - " & year);

Save this source and go to your HTML page

<!--- Page Content --->
<script type="text/javascript" src="copyright.js"></script>

There, done. That's all you had to do, and now no one can take your site legally!!!
If you have any questions, feel free to ask.

[moopet]

You haven't needed an explicit copyright notice on websites since Berne in 1989.

That said, applying it with javascript has the major failing that if it's viewed in something that doesn't execute javascript, it's simply not there!