.nav{ position:relative;z-index:99999999;width:1000px; background:#2389f8;}
#jsddm{	margin: 0;padding: 0;}
#jsddm li{float: left;list-style: none;font: 12px Tahoma, Arial; width:90px; height:35px;background:url(http://www.igoodgame.com/templets/xinqq/img/nav_bg.jpg);}

#jsddm li a{display:block;text-decoration: none;height:35px; width:90px;color:#fff;white-space: nowrap; text-align:center; line-height:35px;font:14px/35px "微软雅黑","黑体";}

#jsddm li a:hover{color:#ffc573;}
#jsddm li a.on{	 color:#fff;}
#jsddm li a.off{color:#fff;}

#jsddm li ul{margin: 0;padding:5px 0 0 5px;position: absolute;visibility: hidden; background:#e41f26; width:285px; background:#52a2f9;}
		
#jsddm li ul li{float:left;display: inline;background:none;}
#jsddm li ul li a{width: auto;background:#52a2f9;color: #fff; line-height:28px; width:90px; height:28px;overflow:hidden;}
#jsddm li ul li a:hover{background: #eee;color:#333;}
.last ul{right:0;}