.content{ width:100%; background:#FFF;}

/*左边导航*/
.main_box{ padding:20px 0px;}
.content_left{ width:240px; float:left;}
.subnav{ background:url(../../images/alltoodo/intro/nav_back.gif) repeat-y scroll 174px 0pt;}
.subnav li{ display:block; height:36px;}
.subnav li a{ background:url(../../images/alltoodo/intro/li_back.gif) no-repeat scroll 0pt 100%; padding-left:20px; display:block; line-height:36px;}
.subnav li.sel a{ background:url(../../images/alltoodo/intro/sel.gif) no-repeat; color:#000; font-weight:bold;}

/*中间文字部分*/
.content_text{ width:650px; float:right;}
.ul_text{ width:200px;} 
.right img{border:5px solid #CCC; }
*html .right img{border:5px solid #CCC; }  /* IE6 */