#main .box,
#main .box_content
{
	background-image: url(../images/activity_challenge-background.png);
	background-repeat: no-repeat;
	background-position: 304px 29px;
}

#main ul#activity_sub_nav
{
	position: absolute;
	width: 275px;
	height: 274px;
	margin-top: -338px;
	margin-left: 319px;
}

#main ul#activity_sub_nav li.easy a
{
	margin-top: 129px;
	background-image: url(../images/activity_challenge-icon_easy.png);
	background-position: 10px 10px;
}

#main ul#activity_sub_nav li.easy a:hover
{
	background-image: url(../images/activity_challenge-button_easy.png);
}

#main ul#activity_sub_nav li.difficult a
{
	margin-top: -228px;
	margin-left: 73px;
	background-image: url(../images/activity_challenge-icon_difficult.png);
}

#main ul#activity_sub_nav li.difficult a:hover
{
	background-image: url(../images/activity_challenge-button_difficult.png);
}

#main ul#activity_sub_nav li.average a
{
	margin-left: 145px;
	margin-top: 28px;
	background-image: url(../images/activity_challenge-icon_average.png);
}

#main ul#activity_sub_nav li.average a:hover
{
	background-image: url(../images/activity_challenge-button_average.png);
}