Shopify Related Articles, Randomized

{% capture all_the_tags %}{% for tag in article.tags %}{{ tag }} {% endfor %}{% endcapture %}
{% assign current = article.id %}
{% assign count = 0 %}
<script>
	function fisherYates ( myArray ) {
		var i = myArray.length,j,temp;
		if (i === 0) return false;
		while (--i) {
			j = Math.floor(Math.random()*(i+1));
			temp = myArray[i];
			myArray[i] = myArray[j]; 
			myArray[j] = temp;
		}
	}

	var articles = new Array();
	{% for article in blog.articles %}
		{% unless article.id == current %}
			{% for tag in article.tags %}
				{% if all_the_tags contains tag %}
					{% if article.content contains 'src' %}
						{% assign article_img = article.content | split:'src="' %}
						{% assign article_img = article_img[1] | split:'"' %}
						{% assign article_img = article_img[0] %}
						{% capture article_img %}<img src='{{ article_img }}' alt='{{ shop.name | escape }} {{ article.title | escape }}' />{% endcapture %}
					{% else %}
						{% capture article_img %}<img src='{{ 'logo.png' | asset_url }}' alt="{{ shop.name }}" />{% endcapture %}
					{% endif %}
					articles[{{ count }}] = "<a href='{{ article.url }}'>{{ article_img | img_tag }}<br />{{ article.title | escape }}</a>";
					{% assign count = count | plus:1 %}
				{% endif %}
			{% endfor %}
		{% endunless %}
	{% endfor %}
	
	fisherYates(products);
	for(var i=0;i<4;i++) {
		document.write(articles[i]);	
	}
	
</script>

On line 36
fisherYates(products);
should be
fisherYates(articles);