body{height:2000px;}
/*main css*/
.izl-rmenu{position:fixed; right:0; margin-right:20px; bottom:20px; padding-bottom:20px; background:url(../images/r_b.png) 0px bottom no-repeat; z-index:999; }
.izl-rmenu .btn{width:72px; height:73px; margin-bottom:1px; cursor:pointer; position:relative;}
.izl-rmenu .btn-top{background:url(../images/r_top.png) 0px 0px no-repeat; background-color:#6da9de; display:none;}
.izl-rmenu .btn-top:hover{background-color:#fbb01f;}