Add own scrollbar in the textarea of the website

This task is pretty simple. Main purpose is to embed our own scrollbar without arrows to the text elements (textarea) on the website. There are 2 pages with such elements (textarea) [login to view URL] [login to view URL] (Pages will be provided later) On these pages textarea elements are a little different in view, so we'll provide different scrollers images for them. So here are exact points we'd ask you to do: 1. Replace standard scrollbars on the pages: [login to view URL] [login to view URL] 2. Fix a little bug connected with scrollbar on the page [login to view URL] (please see [login to view URL] in the atachment)