function chgcouleurbarre()
{
if (document.body.clientwidth<event.clientX)
 with(document.body.style)
 {
 scrollbarDarkShadowColor="#ffffff";
 scrollbar3dLightColor="#ffffff";
 scrollbarArrowColor="#ffffff";
 scrollbarBaseColor="#ffffff";
 scrollbarFaceColor="#ffffff";
 scrollbarHighlightColor="#ffffff";
 scrollbarShadowColor="#ffffff";
 scrollbarTrackColor="#ffffff";
 }
else 
 with(document.body.style)
 {
 scrollbarDarkShadowColor="#000000";
 scrollbar3dLightColor="#ffffff";
 scrollbarArrowColor="#ffffff";
 scrollbarBaseColor="#000000";
 scrollbarFaceColor="#080865";
 scrollbarHighlightColor="#080865";
 scrollbarShadowColor="#ffffff";
 scrollbarTrackColor="#ffffff";
 }
}
if (document.all)
{
 document.onmousemove=chgcouleurbarre;
}