What do JavaScript code look like?
Like HTML, JavaScript is just text that can be typed into a text editor. Its code is embedded
in HTML within a <SCRIPT> tag. Some old browsers don't understand this tag.
To prevent them from treating your JavaScript as HTML, always use this trick involving HTML comments...
<script type="text/javascript">
<!-- hide JavaScript code from old browsers
YOUR SCRIPT HERE
// end the hiding comment -->
</script>
