There are two div elements in my code:
<div id="ing" style="position:relative;">
<div id="comm" style="position: absolute; width: 27% !important; height: 141px; right: 18px; top: 1px; ">
</div>
</div>
After that, I set Tinymce to the "ingredients" div in JavaScript. How can I create a shared scrollbar for these two divs, similar to the example shown here: http://jsfiddle.net/userdude/hThsx/