1.4.14 Call CSS From JS

[ElasticUser]

In 1.4.14 program/js/tinymce/plugins/emoticons/plugin.min.js, how can I call a custom CSS file?   I tested various ways to see if I could get animated SVG Emoticons calling a CSS file from that JS file with No success yet.  That's why I asked this on here over a week ago.  Does anybody here actually know the answer.