.wolframalpha {
	background-image: url('../icon/WolframAlphaEqualOff.png');
	background-position: center right;
	background-repeat: no-repeat;
	margin-right: 3px;
	padding-right: 15px;
}

.wolframalpha:hover {
	background-image: url('../icon/WolframAlphaEqual.png');
	background-position: center right;
	background-repeat: no-repeat;
}