button.expand {
	background-image:url(../img/expand.gif);
	background-position:0px -1px;
	border:0pt none;
	cursor:pointer;
	height:20px;
	margin-right:6px;
	width:20px;
	margin-left:2px;
	margin-bottom:2px;
	-margin-bottom:0px;
}
button.expand:hover {
	background-position: 0px 19px;
}

button.contract {
	background-image:url(../img/contract.gif);
	background-position:0px -1px;
	border:0pt none;
	cursor:pointer;
	height:20px;
	margin-right:6px;
	width:20px;
	margin-left:2px;
	margin-bottom:2px;
	-margin-bottom:0px;
}
button.contract:hover {
	background-position: 0px 19px;
}