.iphone-style{display:block;width:87px;height:28px;background:url('../img/iphone.png') no-repeat;-webkit-border-radius:5px;-moz-border-radius:5px;border-radius:5px;overflow:hidden;cursor:pointer}.firerift-style{display:block;width:68px;height:28px;background:url('../img/firerift.png') no-repeat;cursor:pointer}.on{background-position:0 100%}.off{background-position:100% 0}.hidden{display:none}