[Matre]

<script type='text/javascript'>
	// by Matre (c) (r) (tm) 2011
	jQuery(function ($) {
		$("ul.tabs a").each(function () {
			if (this.href == location.href)
				$(this).replaceWith($(this).children().addClass("str"));
		});
	});
</script>

Вот, нормальный код.