.sky_78 { position:relative; }
.sky_78 img { width:100%; height:100%; border:0px; display:none; position:absolute; left:0px; top:0px; z-index:10; }
@media (max-width:480px) {
.sky_78 img {width:100%;}
}
/* .box78_btns { width:auto; height:25px; padding:10px; position:absolute; right:48%; bottom:0px; z-index:20; } */
.box78_bt { width:12px; height:12px; margin-left:10px; border:0px solid gray; float:left; cursor:pointer; 
border-radius:50%;
-moz-border-radius:50%; }
.btn_c1 {
background-color:#eeeeee; 
box-shadow: 1px 1px 3px gray inset;
-moz-box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.4) inset;
}
.btn_c1:hover { background-color:yellow; }
.btn_c2 {
background-color:#6d8bd9; 
box-shadow: 1px 1px 2px #333;
-moz-box-shadow: 1px 1px 2px rgba(0, 0, 0, 0.7);
}