window.onload = function() 
{ 
var barre = document.getElementById('contenitore'); 
barre.style.scrollbarFaceColor = '#3D2D1E'; 
barre.style.scrollbarHighlightColor = '#654F3B'; 
barre.style.scrollbarShadowColor = '#7C634C';
barre.style.scrollbar3DlightColor = 'red'; 
barre.style.scrollbarArrowColor = '#654F3B'; 
barre.style.scrollbarTrackColor = '#654F3B'; 
barre.style.scrollbarDarkshadowColor = '#3D2D1E'; 
}