RelapIO

function relap_hook_content( $content ) {
	if (!is_single()) return $content;
	$relap =
	<<<EOT
	<script id="GuUaUpJSmjDKaKio">if (window.relap) window.relap.ar('GuUaUpJSmjDKaKio');</script>
	EOT;
	return
	return $content . $relap;
}
add_filter( 'the_content', 'relap_hook_content' );