Use javascript to change the color of the TEXTAREA scroll bar and button, and how to flatten the scroll bar

How can I change the color of the TEXTAREA scroll bar and button, and how to make the scroll bar flat rather than highlighted?
Thank you. I'm sorry.
1st Floor
<Textarea style = "SCROLLBAR-FACE-COLOR: # ffffff;
SCROLLBAR-HIGHLIGHT-COLOR: # e7dbbd;
SCROLLBAR-SHADOW-COLOR: # d9c69f;
SCROLLBAR-3DLIGHT-COLOR: #99cc99;
SCROLLBAR-ARROW-COLOR: # ffffff;
SCROLLBAR-TRACK-COLOR: # ffffff;
SCROLLBAR-DARKSHADOW-COLOR: #99cc99;
SCROLLBAR-base-color: # ffffff "cols = 16 rows = 4>
Fghdfgsertdfgdj
G; werosdfyhdfg
Ertgdfgsdfw
Dtyftghdfgowu
Ertty </textarea>
No way under. 2000 available under XP
2nd floor
The above Code requires IE5.5 or above
Third floor
Example: <textarea style = "scrollbar-base-color: red" rows = "7" cols = "20"> </textarea>
Color of bright side of scrollbar-3d-light-color stereo scroll bar
Scrollbar-arrow-color the color of the upper and lower arrow of the buttons
Scrollbar-base-color Basic color of the scroll bar
Scrollbar-dark-shadow-color the color of the strong shadow of the three-dimensional scroll bar
Scrollbar-face-color of the protruding part of the stereo scroll bar
Scrollbar-highlight-color the color of the blank area of the scroll bar
Scrollbar-shadow-color specifies the color of the shadow of a three-dimensional scroll bar.