#tetracase {
	OVERFLOW: hidden; WIDTH: 160px; POSITION: relative; HEIGHT: 160px
}
#tetracase A {
	FONT-WEIGHT: bold; FONT-SIZE: 120%
}
.tetradiv {
	LEFT: 0px; OVERFLOW: hidden; WIDTH: 160px; POSITION: absolute; TOP: 160px; HEIGHT: 160px
}