#block_1 {
	float: left;
	width: 518px;
	margin-left: 230px;
}
#block_2 {
	float: left;
	width: 230px;
	margin-left: -750px;		/* -(CC+LC+2) */
}
#block_3 {
	float: left;
	width: 230px;
}
#block_1, #block_2, #block_3 {
	overflow: hidden;
}