Multiple images/banners per position

[Tangol]

At the moment, the plugin allows us to add only 1 Image/Script per banner.
It would be nice if we had the option to upload multiple images per every banner, as we'll have cases where a partner wants to promote 2 or more products on the same banner position.

For this I was using a simple JS that allowed me to show random banners on each page reload, based on a predefined list.
Example:

<script type="text/javascript">
	var imageUrls = [
		"https://www.5banners.com/store/img/cms/00045.gif" , 
		"https://www.bannereasy.com/assets/templates/2/1071.png"
	];
	var imageLinks = [
		"http://www.stackoverflow.com" , 
		"http://www.google.com"
	];

	function tangoAdBoxTall() {
		var dataIndex = Math.floor(Math.random() * imageUrls.length);
		var img = '<a href=\"' + imageLinks[dataIndex] + '"><img src="';
		img += imageUrls[dataIndex];
		img += '\" title=\"Your Text!\"/></a>';
		return img;
	}
</script>
<script type="text/javascript" defer>
	document.write(tangoAdBoxTall());
</script>

Maybe this can be adapted to the Banners plugin.
Thanks!