Place the following code into the spot on your web page where you want your copyright date to appear:
var d = new Date();
var curr_year = d.getFullYear();
</script> yourcompanyname. All Rights Reserved.
Note that the copyright symbol protects the look of your website, not the content. The content has to be copyrighted separately. However, anyone with any sense should think twice about stealing your content if he or she notices the copyright symbol.