Fixed Div for horizontal page scroll

I've been trying to get a div to scroll horizontally with a page (for a side scrolling site), but I don't want it to scroll vertically with the page. If the user scrolls vertically then the div shouldn't move with the scroll.

I've used scrollTop to get an offset and hide the div, but I'd rather it just maintain it's position and not be visible when the page is scrolled down.