.tab {
	-moz-opacity: .5;
	opacity: .5;
	filter: alpha(opacity=50);
}
.tab:hover {
	-moz-opacity: 1;
	opacity: 1;
	filter: alpha(opacity=100);
}
#background {
	-moz-opacity: .75;
	opacity: .75;
	filter: alpha(opacity=75);

}
#cover {
	-moz-opacity: .8;
	opacity: .8;
	filter: alpha(opacity=80);
}
#activetab {
	-moz-opacity: 1;
	opacity: 1;
	filter: alpha(opacity=100);
}