#goL2{ width:10px; height:25px; overflow:hidden; position:absolute;  background-position:-60px 0; left:-25px; top:135px;background-image: url(2017102622055925195.png);background-repeat:no-repeat;}
#goL2:hover{ background-position:1px 0;}
#goR2{ width:10px; height:25px; overflow:hidden; position:absolute;  background-position:-40px 0; right:-25px; top:135px;background-image:url(2017102622055925195.png);background-repeat:no-repeat;}
#goR2:hover{ background-position:-19px 0;}