Make scroll-bar appear on hover of scroll-bar-track

[lmo2lopm]

I'm using the custom scroll-bar styles via CSS to implement custom scroll-bars in webkit. If other browsers have implemented prefixed or the unprefixed versions/version please let me know.But, on to my question. Is there a way I can make the scroll-bar appear on hover of the scroll-bar-track?Kind of like in Mac OS X Lion and Mountain Lion ?Here is my CSS for the custom scroll-bars"\[code\]::-webkit-scrollbar { width: 12px;}/* Track */::-webkit-scrollbar-track { -webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.3); -webkit-border-radius: 10px; border-radius: 10px;}/* Handle */::-webkit-scrollbar-thumb { -webkit-border-radius: 10px; border-radius: 10px; background: rgba(255,0,0,0.8); -webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.5); }\[/code\]