.up_btn {
	background: url('./img/up-btn.gif') top center no-repeat;
}

.up_btn-over {
	background: url('./img/up-btn-over.gif') top center no-repeat;
}

.down_btn {
	background: url('./img/down-btn.gif') top center no-repeat;
}

.down_btn-over {
	background: url('./img/down-btn-over.gif') top center no-repeat;
}

.up_icon {
	background : url('./img/up-icon.gif') center center no-repeat;
}

.down_icon {
	background : url('./img/down-icon.gif') center center no-repeat;
}