Dołącz jQuery, jeśli nie jest uwzględniony
<!--
Checks to see if jquery is defined
If jQuery is NOT detected, include the script.
-->
<script type="text/javascript">
if(typeof jQuery == 'undefined'){
var foo = document.createElement("script");
foo.type = "text/javascript";
foo.src = "https://code.jquery.com/jquery-1.12.4.min.js"; // add path to jQuery script here
document.head.insertBefore(foo, document.head.getElementsByTagName("script")[0])
}
</script>
CoderHomie