#main {
	margin:0 auto;
	width:900px;
}

#header_link{
	height:20px
}
#header_logo{
	height:145px
}

.col_1, .col_2, .col_3, .col_box_1, .col_box_2, .col_box_1a, .col_box_2a{ float:left;}

#content .col_2{width:480px;}