Horizontal scrolling site with GS

[JWH_Matthew]

With just looking at the source of your site this could be one issue:
You are including a JS file here that doesn't exist. (This could be necessary though)

Code:

<script src="http://smmh.elementfx.com/gs/theme/horizontal/js/jquery.min.js" type="text/javascript"></script>

I would try fixing that first.