<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js" type="text/javascript"></script>
<script src="javascript/jquery.growl.js" type="text/javascript"></script>
<link href="stylesheets/jquery.growl.css" rel="stylesheet" type="text/css" />
file.js
$.growl({
title: "Informace",
message: "Zákazník upraven úspěšně!",
duration: 2000, // time
size: 'large', // 'small' | 'medium' | 'large' - default: 'medium'
location: 'tc', // 'tl' | 'tr' | 'bl' | 'br' | 'tc' | 'bc' - default: 'tr'
style: 'notice' // 'default' | 'error' | 'notice' | 'warning' - default: 'default'
});