.navi .default_down {
	width:42px;
	height:42px;
	background:url(core/widget/navi/default_down/button.png) no-repeat center center;
	cursor:pointer;
	opacity:1;
}
.navi .default_down:hover	{
	opacity:0.8;
}
.navi .default_down a	{
	display:block;
}