Can't grab scroll bars on dom_overlay_container

Hi,

I have the following style applied to the DOM:

document.getElementById("dom_overlay_container").style.overflow="scroll";

The scroll bars show and they adapt to the content just fine. The problem is I cannot grab them with the mouse. It seems like there is a layer on top preventing me from grabbing the scrollbars.

Any ideas on how to make the scrollbars clickable?

Thanks!