#b1, #b2, b3, #b4, #b5, #b6, #b7, b8, #b9, #b10, #Xb12{
	width:0px;
	height:0px;
	visibility: hidden;
}

#r3, #r2, #r5{
	width:0px;
	height:0px;
	visibility: hidden;
}

#r4, #r42{
	background:red;
}