.b-top {z-index:2600;position:fixed;left:0;bottom:90px;width:34%;margin-left:55%;opacity: 0.5;filter:alpha(opacity=50);}
.b-top:hover {opacity:1;filter:alpha(opacity=100);cursor:pointer;}
.b-top-but {z-index:2600;position:absolute;display:block;left:56px;bottom:0;margin:0 0 0 100%;padding:32px 12px 4px;
color:white;background:#059BD8 url(http://intronova.md/images/demo/b-j-top.png) no-repeat 50% 11px;border-radius:7px;}