Redirect mobile users to separate URL

fancybox is great– but it looks terrible on small screens.

is there a way i can redirect mobile users to a different url, while retaining fancybox functions for desktop users?

I am trying something like this– but no success so far:

<“a” href=”void(0)”>
link

<script type=”text/javascript”>
jQuery(document).ready(function($){
var isMobile = navigator.userAgent.match(/(iPhone|iPod|iPad|Android|BlackBerry)/);
$(‘#link’).click(function() {
if (isMobile){window.location.href = ‘#link’;}
else{window.location.href = ‘#fancyboxID-3’;}
});
});
</script>

fancy box

https://www.ads-software.com/plugins/easy-fancybox/