.ui-icon-email {
		background-image: url("/images/email.png");
		background-size: 18px 18px;
	}
	.ui-icon-square-plus {
		background-image: url("/images/levels/S.Plus.png");
		background-size: 18px 18px;
	}
	.ui-icon-square-plus-challenge {
		background-image: url("/images/levels/S.Plus-Challenge.png");
		background-size: 18px 18px;
	}
	.ui-icon-square-plus-advanced {
		background-image: url("/images/levels/S.Plus-Advanced.png");
		background-size: 18px 18px;
	}
	.ui-icon-square-mainstream {
		background-image: url("/images/levels/S.Mainstream.png");
		background-size: 18px 18px;
	}
	.ui-icon-square-mainstream-plus{
		background-image: url("/images/levels/S.Mainstream-Plus.png");
		background-size: 18px 18px;
	}
	.ui-icon-square-mainstream-challenge {
		background-image: url("/images/levels/S.Mainstream-Challenge.png");
		background-size: 18px 18px;
	}
	.ui-icon-square-mainstream-advanced{
		background-image: url("/images/levels/S.Mainstream-Advanced.png");
		background-size: 18px 18px;
	}
	.ui-icon-square-challenge {
		background-image: url("/images/levels/S.Challenge.png");
		background-size: 18px 18px;
	}
	.ui-icon-square-advanced {
		background-image: url("/images/levels/S.Advanced.png");
		background-size: 18px 18px;
	}
	.ui-icon-square-advanced-challenge {
		background-image: url("/images/levels/S.Advanced-Challenge.png");
		background-size: 18px 18px;
	}
	.ui-icon-clog-lessons {
		background-image: url("/images/levels/Clog.Lessons.png");
		background-size: 18px 18px;
	}
	.ui-icon-clog-intermediate {
		background-image: url("/images/levels/Clog.Intermediate.png");
		background-size: 18px 18px;
	}
	.ui-icon-clog-easy {
		background-image: url("/images/levels/Clog.Easy.png");
		background-size: 18px 18px;
	}
	.ui-icon-clog-advanced {
		background-image: url("/images/levels/Clog.Advanced.png");
		background-size: 18px 18px;
	}