Simply copy and paste the source code below within <body> of your HTML page
Example:
<body>
your page content
<!-- Begin 1800ring.com - Country Calling Tool Code --> <script language="JavaScript" src="http://1800ring.com/country_codes/banners/country_code_banner1.js"></script> <!-- End 1800ring.com - Country Calling Tool Code -->
more content
</body>