.gywm_sb{width:100%;height:460px;background:url(img/sb_bg.gif) center top no-repeat;}
.gywm_sb .w{width:1000px;}
.gywm_sb .l_img{width:249px;float:left;height:460px;}
.gywm_sb .l_img img{height:460px;width:249px;}
.gywm_sb .r_list{width:750px;height:460px;float:left;}
.gywm_sb .r_list li{width:250px;height:230px;float:left;}
.gywm_sb .r_list li img{width:250px;height:230px;}