#student1 { margin-top: -20px; }
#student2 { margin-top: -32px; }

#ir_button {
	display: block; overflow: hidden; height: 48px; width: 170px;
	background: url(/about/images/IR_bttn.png) 0% 0%;
}

#ir_button:hover, #ir_button:focus {
	background-position: 0% 100%;
}