Without using the perfectly workable overflow-x CSS property, you could resize the content to not require a scroll bar, through javascript or through HTML/CSS design.
You could also do this:
window.onscroll = function () {
window.scrollTo(0,0);
}
... which will detect any scrolling and automatically return the scroll to the top/left. It bears mentioning that doing something like this is sure to frustrate your users.
You're best served by creating an environment where unwanted UI elements are not present at all (through the CSS, through design). The approach mentioned above shows unnecessary UI elements (scroll bars) and then causes them to not work in a way that the user expects (scroll the page). You've "broken a contract" with the user - how can they trust that the rest of your web site or application will do expected things when the user makes a familiar action?
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