How to make a text box with scroll button, click and drag.

I want to make a scroll bar where the user clicks and drags to display content.

I used the example on page arrows to move the text, and everything worked, but I want to eliminate the little arrows to only use the scroll bar work.

the page that is used as an example:

http://www.heathrowe.com/adobe-edge-animate-simple-scrollbar-symbols/

I thank you for your help.