/* メインメニュー */
#centermenu ul {   display:block;   list-style-type: none;   margin:0;   padding:0;}

/* サブメニュー1段目 */
#centermenu ul ul{   display:none;   position:absolute;   top:100%;   left:0;}

/* サブメニュー2段目以降 */
#centermenu ul ul ul {   top:0;   left:100%;}

/* リスト */
#centermenu li {   float:left;}
#centermenu li li {   clear:both;}
#centermenu li:hover {   position:relative;}
#centermenu li:hover > ul {   display: block}

/* IE6用 */
* html #centermenu li {   behavior: expression(      this.onmouseover=new Function("this.className='column1'"),      this.onmouseout=new Function("this.className=''"),      this.style.behavior = 'none'   );}

* html #centermenu li li {   behavior: expression(      this.onmouseover=new Function("this.className='column2'"),      this.onmouseout=new Function("this.className=''"),      this.style.behavior = 'none'   );}

* html #centermenu li li li {   behavior: expression(      this.onmouseover=new Function("this.className='column3'"),      this.onmouseout=new Function("this.className=''"),      this.style.behavior = 'none'   );}

#centermenu .column1 {position:relative;}
#centermenu .column1 ul {display:block;}
#centermenu .column1 * ul {display:none;}
#centermenu .column2 {position:relative;}
#centermenu .column2 ul {display:block;}
#centermenu .column2 * ul {display:none;}
#centermenu .column3 {position:relative;}
#centermenu .column3 ul {display:block;}
#centermenu .column3 * ul {display:none;}