.ddsmoothmenu { float:left; width:734px; height:42px; background:url(../images/nav_bg.jpg) no-repeat;}

.ddsmoothmenu ul { width:720px; margin:0 auto; z-index:100;/*Z向浮动高度*/					 
				   list-style: none;/*去掉LI本身左侧的圆点*/					 
}	/*一级栏目---an*/
.ddsmoothmenu ul li {
					 position: relative;
					 display: block;
					 float:left;
					 width:120px;					 
					 height:42px;
					 line-height:42px;
					 text-align:center;
					 font-size:14px;
					 font-weight:bold;			 	 					
}
/*这段是适应IE6--an*/
*html .ddsmoothmenu ul li {
					 position: relative;/*竖向菜单修改2--竖排*/ 
					 float:left;			 
}
/*一级栏目的链接---an*/
.ddsmoothmenu ul li a { display:block; 
						width:120px;
						line-height:42px;
						color:#fff;}  
  /*一级栏目链接的属性设置*/
.ddsmoothmenu ul li a:link, .ddsmoothmenu ul li a:visited { color:#fff;}/*一级栏目链接的本身颜色及背景设置*/
.ddsmoothmenu ul li a:hover { color:#fff; background:url(../images/nav_tag.jpg) no-repeat;}/*一级栏目链接鼠标悬停颜色及背景色设置*/					
/*二级栏目整体控制*/
.ddsmoothmenu ul li ul { position: absolute; left:0; margin-left:2px; visibility:hidden; width:112px; padding-bottom:5px; border: #417d64 1px solid; background:#f5f5f5; border-top:none;}

/*二级栏目LI的控制*/
.ddsmoothmenu ul li ul li {float: left;
							width:114px;
							height:27px;																					
 							line-height:27px;
							font-weight:normal;											
							}
.ddsmoothmenu ul li ul li a{ width:114px; display:block; height:27px; line-height:27px; color:#4b4b4b; font-size:12px;}	
.ddsmoothmenu ul li ul li a:link, .ddsmoothmenu ul li ul li a:visited { color:#4b4b4b;}
.ddsmoothmenu ul li ul li a:hover{ background:#417d64; color:#fff;}			

/*箭头*/
.downarrowclass { position: absolute; display:none; }
.rightarrowclass { position: absolute; display:none; }
/*阴影 */
.ddshadow { position: absolute; left: 0; top: 0; width: 0; height: 0; }
.toplevelshadow { /*透明度/IE不支持/*/ opacity: 0.8; }