вот один пример:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"> 
<html>
	<head></head>
	<body>
	
		<script type="text/javascript">
		var global_parameter = 0;
		setInterval(function()
			{
			console.log(global_parameter);
			global_parameter += 6;
			}, 1000);
		</script>
	</body>
</html>
вот второй пример:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"> 
<html>
	<head></head>
	<body>
	
		<script type="text/javascript">
		var obj = new Object();
		obj.param = 0;
		obj.animate = function(ths)
			{
			return function()
				{
				console.log(ths.param);
				ths.param += 3;
				}
			}
		
		setInterval(obj.animate(obj), 1000);
		</script>
	</body>
</html>