#main-1  {
	position: absolute;
	top: 5px;
	left: 5px;
	}

#main-2  {
	position: absolute;
	top: 5px;
	left: 455px;
	}

#main-3  {
	position: absolute;
	top: 455px;
	left: 5px;
	}

#main-4  {
	position: absolute;
	top: 455px;
	left: 455px;
	}

#drinnen_start a {
	display: block;
	text-indent: -2000px;
	width: 450px;
	height: 450px;
}

#drinnen_start a:link  {
	background-position: 0 0;
}

#drinnen a {
	display: block;
	text-indent: -2000px;
	width: 450px;
	height: 450px;
}

#drinnen a:link  {
	background-position: 0 0;
}

#drinnen a:link:hover {
	background-position: -450px 0;
}

#drinnen a:visited	{
	background-position: 0 -450px;
}

#drinnen a:visited:hover {
	background-position: -450px -450px;
}