#rocket-to-top div {
    left: 0;
    margin: 0;
    overflow: hidden;
    padding: 0;
    position: absolute;
    top: 0;
    width: 149px;
}
#rocket-to-top .level-2 {
    background: url("huojian.png") no-repeat scroll -149px 0 transparent;
    display: none;
    height: 250px;
    opacity: 0;
    z-index: 1;
}
#rocket-to-top .level-3 {
    background: none repeat scroll 0 0 transparent;
    cursor: pointer;
    display: block;
    height: 100px;
    z-index: 2;
}
#rocket-to-top {
    background: url("huojian.png") no-repeat scroll 0 0 transparent;
    cursor: default;
    display: block;
    height: 250px;
    margin: -125px 0 0;
    overflow: hidden;
    padding: 0;
    position: fixed;
    right: 0;
    top: 80%;
    width: 149px;
    z-index: 11;
}



@media (max-width: 768px){
	#rocket-to-top div {
		width: 74px;
	}
	#rocket-to-top .level-2 {
		background: url("huojianWap.png") no-repeat scroll -74px 0 transparent;
		height: 125px;
	}
	#rocket-to-top .level-3 {
		height: 50px;
	}
	#rocket-to-top {
		background: url("huojianWap.png") no-repeat scroll 0 0 transparent;
		height: 125px;
		margin: -62px 0 0;
		width: 74px;
	}

}