#topmostbtn {
	float: right;
	margin: 0;
	padding: 0;
}

#mainbtn {
	float: left;
	width: 127px;
	height: 60px;
}

.homebtn {
	clear: both;
	position: relative;
	display: block;
	height: 60px;
	width: 127px;
	background: url('../../images/homebtn.gif') no-repeat;
	background-position: 0 0;
	cursor: pointer;
}	
.homebtn span.hover {
	position: relative;
	display: block;
	height: 60px;
	width: 127px;
	background: url('../../images/homebtn.gif') no-repeat;
	background-position: left bottom;
}


.biobtn {
	clear: both;
	position: relative;
	display: block;
	height: 60px;
	width: 127px;
	background: url('../../images/biobtn.gif') no-repeat;
	background-position: 0 0;
	cursor: pointer;
}	
.biobtn span.hover {
	position: absolute;
	display: block;
	height: 60px;
	width: 127px;
	background: url('../../images/biobtn.gif') no-repeat;
	background-position: bottom;
}


.photobtn {
	clear: both;
	position: relative;
	display: block;
	height: 60px;
	width: 127px;
	background: url('../../images/photobtn.gif') no-repeat;
	background-position: 0 0;
	cursor: pointer;
}	
.photobtn span.hover {
	position: absolute;
	display: block;
	height: 60px;
	width: 127px;
	background: url('../../images/photobtn.gif') no-repeat;
	background-position: bottom;
}

.newsbtn {
	clear: both;
	position: relative;
	display: block;
	height: 60px;
	width: 127px;
	background: url('../../images/newsbtn.gif') no-repeat;
	background-position: 0 0;
	cursor: pointer;
}	
.newsbtn span.hover {
	position: absolute;
	display: block;
	height: 60px;
	width: 127px;
	background: url('../../images/newsbtn.gif') no-repeat;
	background-position: bottom;
}

.contactbtn {
	clear: both;
	position: relative;
	display: block;
	height: 60px;
	width: 127px;
	background: url('../../images/contactbtn.gif') no-repeat;
	background-position: 0 0;
	cursor: pointer;
}	
.contactbtn span.hover {
	position: absolute;
	display: block;
	height: 60px;
	width: 127px;
	background: url('../../images/contactbtn.gif') no-repeat;
	background-position: bottom;
}