Fornatted html using hooks

I was wondering if there is an easy way to return formatted html using a hook?

function add_theme_link() {
	echo '<div id="footer">'
.'<p class="copy">&copy; ' .date('Y').' '.get_bloginfo('name').' Urban View theme by <a href="http://cssmayo.com">.css{mayo}</a>, Powered by <a href="http://wordpress.org" rel="nofollow">WordPress</a>'
		.'</p>'
		.'</div><!-- footer -->';
}

add_action('wp_footer', 'add_theme_link', 1);

I would like the HTML that is printed out to be formatted with new lines, tabs and such. As it is now it all prints out on a single line.
I know I could do this by modifying the template(footer.php)but I would like to keep the template as free of code as possible. Any help would be appreciated