selected and unselectable shows unchecked checkbox

[blackhawk180]

An item that is usnelectable and selected shows as unselected.
This seems to be an icon issue:
in the css:
.fancytree-unselectable span.fancytree-checkbox,
.fancytree-unselectable span.fancytree-checkbox:hover {
opacity: 0.4;
filter: alpha(opacity=40);
background-position: 0px -32px;
}

the checked icon is at a different poistion:
background-position: -32px -32px;

I have checekd this with version 2.9.0

[blackhawk180]

update of stylesheet should be:
.fancytree-selected.fancytree-unselectable span.fancytree-checkbox,
.fancytree-selected.fancytree-unselectable span.fancytree-checkbox:hover {
opacity: 0.4;
filter: alpha(opacity=40);
background-position: -32px -32px;
}
as this is more specfic for selected + unselectable