Click link on page load javascript

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Javascript

jQuery

Vimeo

I'd like a video to start playing on page load. I tried to write a script that on page load will click the 'play' button link, but it is not working. That script is

<script>
    $(document).on('ready', function () {
        $(getElementByClass('.mSIcon.mSVideo')).trigger('click');
    )};
</script>

The play button is in the link

Why is this not working? The site is http://smmcnyc.com/work/smmc/smmc1306/[^]

I also need the videos to cycle, and after the first video ends, for the second video to start. Any idea how to solve this as well?