.backTop{ width:200px; height:73px; right:10px; bottom:20px; position:fixed;}
.backTop a{ display:block; background:url(../images/jianyi.png); outline:none;position:absolute; right:0px;}
.backTop .gototop{ width:47px; height:47px; margin-bottom:2px; bottom:73px; display:none;}
.backTop .proposal{ width:47px; height:25px; background-position:0 -48px;margin-bottom:2px; display:none; bottom:73px;}
.backTop .tdCode{ width:47px; height:47px; background-position:0 -74px; display:none; bottom:-50;}
.backTop span
{
	display:none; 
	border:1px solid #ddd; 
	width:180px;
	height:200px;
	position:absolute;
	bottom:25px;
	right:50px;
	background:#eee;
	
}

.backTop a.gototop:hover{background-position:0 -165px;}
.backTop a.proposal:hover{background-position:0 -213px;}
.backTop a.tdCode:hover{background-position:0 -239px;}