<script type="text/javascript">
jQuery(document).ready(function(){
    jQuery(jQuery('a:contains("Unknown Location")')).each(function () {
	   jQuery(this).addClass('unknown'); // Just to capitalize the name, found easy with CSS
	   var page = (jQuery(this).attr('href')); // Fetch the link
	   page = page.substr(page.lastIndexOf("/") + 1);
	   page = page.substr(0, page.lastIndexOf('.')) || page;
	   jQuery(this).before('Viewing ').html(page); // Change linked text and prepend text 'Viewing' before it.
    });
});
</script>