errore con css validator

[alive]

errore con css validator

mettendo questo codice

[code]
body {
scrollbar-face-color: #5b5b5b;
scrollbar-highlight-color: #000000;
scrollbar-3dlight-color:;
scrollbar-darkshadow-color:;
scrollbar-shadow-color:;
scrollbar-arrow-color:;
scrollbar-track-color: #5e5e5e;
background: url(images/other/background.gif);
text-align : center;
}

#tebella_sfondo {
background-color : #ffffff;
margin-right: auto;
margin-left: auto;
padding-top: 10px;
padding-bottom: 10px;
text-align : left;
width : 760px;
height: 500px;
border: none;
}

#tabella_sfondo_2 {
background-color :;
margin-right: auto;
margin-left: auto;
text-align : left;
width : 740px;
height: 500px;
border: none;
}
[code]

il validator mi da questa serie di errori ma non capisco il perchè

[code]
Errors
URI : file://localhost/C:\Documents and Settings\Alessandro\Desktop\test\test.css
Line: 2 Context : body
Property scrollbar-face-color doesn't exist :

Line: 3 Context : body
Property scrollbar-highlight-color doesn't exist :

Line: 4 Context : body
Property scrollbar-3dlight-color doesn't exist :

Line: 5 Context : body
Property scrollbar-darkshadow-color doesn't exist :

Line: 6 Context : body
Property scrollbar-shadow-color doesn't exist :

Line: 7 Context : body
Property scrollbar-arrow-color doesn't exist :

Line: 8 Context : body
Property scrollbar-track-color doesn't exist :

Warnings
URI : file://localhost/C:\Documents and Settings\Alessandro\Desktop\test\test.css
Line : 10 (Level : 1) This property applies to block-level elements. : body
Line : 14 (Level : 1) You have no color with your background-color :
Line : 19 (Level : 1) This property applies to block-level elements. :
Line : 26 (Level : 1) You have no color with your background-color :
Line : 29 (Level : 1) This property applies to block-level elements. :
Valid CSS information
body {
background : url(images/other/background.gif);
text-align : center;
}
{
background-color :;
margin-right : auto;
margin-left : auto;
padding-top : 10px;
padding-bottom : 10px;
text-align : left;
width : 760px;
height : 500px;
border : none;
}
{
background-color :;
margin-right : auto;
margin-left : auto;
text-align : left;
width : 740px;
height : 500px;
border : none;
}
[/code]

chi sa spiegarmi ?

[fraccozzo]

Se non sbaglio, devi eliminare i trattini. Mi pare che quelle classi le devi richiamare cosi:

ScrollbarFaceColor etc etc

[laburno]

Ciao Alive,
le proprietà legate alle colorazione delel Scrollbars non sono CSS standard, e funzionano solo per IE Probabilmente non vengono validate per questo.