title: Freezing a div from horizontal scrolling but letting it scroll vertically
body: <p>I have an outer division(with fixed height and width) which contains two divisions placed vertically occupying equal widths and full height. I want them to scroll simultaneously in vertical direction but only the second one to scroll horizontally. So that essentially the first div is frozen from horizontal scrolling alone. 
  within the divs I am using d3 for data visualization using SVG based graphics.  </p>