html, body {
width:100%;height:100%;
z-index:0;background:#f7f7f7;
}
html, body, div {
	margin:0px; padding:0px;
}
.lb {
	position:relative;display:block; 
}
#full {
	margin: 0px auto;width: 900px;z-index:2;
}
#top {
	height:30px;z-index:3;
}
#head {
	height:80px;z-index:3;background: url('/img/logo.png') no-repeat;
}
#body {
z-index:3;
}
#main {
	float:left;width:690px;
	z-index:4;
}
#rightColumn {
	float:right;width:200px;
	z-index:4;
}
#footer	{
	height:50px;clear:both;
	text-align:center;
	z-index:4;
}			
#login_form {
	width:800px;margin:auto auto 0px auto;position:static;
	z-index:5;
}
.full_height{
	height:100%; background:red;
}