* { margin:0px; padding:0px; }
a { outline-style: none; }

#main_nav {
	width: 700px;
	height: 130px;;
}
#main_nav1 {
	width: 700px;
	height: 130px;
}

#main_nav ul {
	position: relative;
	margin: 0px 0px 0px -40px;
	list-style: none;
	background: url(bg4.png);
	width: 700px;
	height: 130px;
	overflow: hidden;

}
#main_nav1 ul {
	position: relative;
	margin: 0px 0px 0px -40px;
	list-style: none;
	background: url(bg5.png);
	width: 700px;
	height: 130px;
	overflow: hidden;

}
#main_nav ul li.shutter {
width: 130px;
height: 130px;
display: block;
float: left;

}
#main_nav1 ul li.shutter {
width: 130px;
height: 130px;
display: block;
float: left;

}
#main_nav ul li#prepurchase {
background: url(prepurchase.png) no-repeat;
margin-right: 5px;

}
#main_nav ul li#dispute {
background: url(dispute.png) no-repeat;
margin-right: 5px;

}
#main_nav ul li#ism {
background: url(ism.png) no-repeat;
margin-right: 5px;

}
#main_nav ul li#plan {
background: url(plan.png) no-repeat;
margin-right: 5px;

}
#main_nav ul li#thickness {
background: url(thickness.png) no-repeat;

}
#main_nav1 ul li#new_construction {
background: url(new_construction.png) no-repeat;
margin-right: 5px;

}
#main_nav1 ul li#refit {
background: url(refit.png) no-repeat;
margin-right: 5px;

}
#main_nav1 ul li#ly2 {
background: url(ly2.png) no-repeat;
margin-right: 5px;

}
#main_nav1 ul li#environmental {
background: url(environmental.png) no-repeat;
margin-right: 5px;

}
#main_nav1 ul li#general {
background: url(general.png) no-repeat;

}
#main_nav ul a.link {
	width: 130px;
	height: 130px;
	display: block;
	background: url(porthole_mask2.png) no-repeat scroll;
	text-indent: -9999px;
	
}

#main_nav1 ul a.link {
	width: 130px;
	height: 130px;
	display: block;
	background: url(porthole_mask2.png) no-repeat bottom center;
	text-indent: -9999px;
	
}