<script type="text/javascript" src="//platform.linkedin.com/in.js">
        api_key:  MY_API_KEY
        onLoad: onLinkedInLoad
        authorize: true
    </script>
    <script>
         function onLinkedInLoad() {
            IN.Event.on(IN, "auth", getProfileData);
        }
        function getProfileData() {
           IN.API.Profile("me").result(onSuccess).error(onError);
        }
    </script>