*html{background-image:url(about:blank);background-attachment:fixed;}/*解决IE6下滚动抖动的问题*/
/*解决IE6下不兼容 position:fixed 的问题*/
#code,#code_hover,#gotop{ width:36px; height:48px; background:url(images/lrtk.png) no-repeat; position:fixed; right:20px; cursor:pointer;
_position:absolute;_bottom:auto;_top:expression(eval(document.documentElement.scrollTop+document.documentElement.clientHeight-this.offsetHeight-(parseInt(this.currentStyle.marginTop,10)||0)-(parseInt(this.currentStyle.marginBottom,10)||0)));
}
#code{ background-position:-276px -258px; bottom:120px; _margin-bottom:120px;}
#code_hover{ background-position:-316px -258px; bottom:120px; _margin-bottom:120px;}
#gotop{ background-position:-276px -310px; bottom:67px; _margin-bottom:67px;} 

#code_nav{ width:90px; background-color:#FFF; position:fixed; right:20px; bottom:120px; cursor:pointer; display:none;
_position:absolute;_bottom:auto;_top:expression(eval(document.documentElement.scrollTop+document.documentElement.clientHeight-this.offsetHeight-(parseInt(this.currentStyle.marginTop,10)||0)-(parseInt(this.currentStyle.marginBottom,10)||0))); _margin-bottom:120px;
border:1px solid #c1c1c1;
}
#code_nav div{ padding:10px 0; font-weight:bold; background-color:#EBEBEB; text-align:center;}
#code_nav a{ display:inline-block; width:100%;padding:10px 0; border-top:1px solid #EBEBEB; text-align:center; text-decoration:none;}
#code_nav a:hover{ background-color:#c1c1c1; color:#FFF;}
#code_nav a.on{background-color:#c1c1c1; color:#FFF;}