.index1, .index2, .index3{
	background: url(../img/sprites5.png) no-repeat;
	background-size: 300% 200%;
}

.index1{
	background-position: 0 0;
	width: 100%;
	height:100%;
}

.index1:hover{
	background-position: 0 100% ;
	width: 100%;
	height:100%;
}

.index2{
	background-position: 50% 0;
	width: 100%;
	height:100%;
}

.index2:hover{
	background-position: 50% 100% ;
	width: 100%;
	height:100%;
}

.index3{
	background-position: 100% 0;
	width: 100%;
	height:100%;
}

.index3:hover{
	background-position: 100% 100% ;
	width: 100%;
	height:100%;
}

.smallimg img{max-width:350px;}