@handsofaten: jScrollPane does not work with textarea elements because it dynamically adds div elements to the contents of the element to which you applied it. You cannot add div elements to a text box.
It would be possible to add a wrapper element to the text box and apply a scroll bar to this parent element. I would not recommend this because when you add text to a text field, their content grows, not the text area itself. You will have to apply a hack to the text field so that it grows with its contents. This probably leads to erratic disorder.
So, I would let go of the idea.
By the way: Webkit (Chrome, Safari) also supports a proprietary way to style CSS scrollbars: http://webkit.org/blog/363/styling-scrollbars/
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