#d1
{
	float: left;
	width: 123px;
	margin-right: 3px;
	background-color: #1b1b1b;
	
}

#d2
{
	float: left;
	background-color: #1b1b1b;
	width: 712px;
	
	padding-left: 3px;
}

#d3
{
	background-color: #1b1b1b;
	margin-left: 3px;
    float: right;
    width: 123px;
    
}

#d1, #d2, #d3
{
	height: 600px; /* fire fox */
	#height: 597px; /* ie7 */
}