Javascript to set ScreenSteps alt tags that match step titles to ""

gistfile1.js

<script type="text/javascript" language="Javascript" >
	jQuery(document).ready(function($) {
		$('.step').each(function(index) {
			var title_tag = $(this).find('>h2');
			title_tag = title_tag || $(this).find('>h3');
			var img = $(this).find('img');
			if ($(title_tag).text() == $(img).attr('alt')) {
				$(img).attr('alt', '');
			}
		});
	});
</script>