@namespace url('http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul');
#sidebar-box {
position: fixed ;
z-index: 55555;
}
#sidebar-box #sidebar-header
{
width :100%;
}
#sidebar-box #sidebar
{
position: fixed ;
width:250px;
height:600px;
border-left:3px solid -moz-dialog;
border-right:3px solid -moz-dialog;
border-bottom:3px solid -moz-dialog;
}

#sidebar-box ~ #sidebar-splitter
{
visibility:collapse;
}