.couplet_ad
/* µ×²¿¹Ì¶¨*/{position:fixed;bottom:auto; top:0; width: 267px; height: 432px; z-index:99999; margin-top:158px;}
* html .couplet_ad
/* IE6 µ×²¿¹Ì¶¨*/{_position:absolute;
_bottom:auto;
_top:expression(eval(document.documentElement.scrollTop));}
.couplet_ad a{ display:block; cursor:pointer;}
#ad_left{ left: 0px;}
#ad_right{ right: 0px;}