gistfile1.html

<!-- A fairly normal copyright stamp with placeholder for current year -->
<p>&copy; Copywright <span class="copyrightYear"></span>, All rights reserved.</p>

<!-- Copywright date injection -->
<script type="text/javascript">
	
	(function() {
		function injectCopywrightDate() {
			var year = new Date().getFullYear();
			var placeholders = document.getElementsByClassName('copyrightYear');
			
			for(var placeholder in placeholders) {
				if (placeholders.hasOwnProperty(placeholder)) {
					placeholders[placeholder].innerText = year;
				}
			}
		}
		
		function onLoad(e) {
			injectCopywrightDate();
		}
		
		// Handle browser inconsistency (cough.cough.IE..)
		if (window.addEventListener) {
			window.addEventListener('load', onLoad);
		}
		else if (window.attachEvent) {
			window.attachEvent('onload', onLoad);
		}	
	})();
	
</script>