title: Unable to navigate unorderlist menu via keyboard tab
body: <p>I am trying to work out why I can not navigate our menu which uses multiple unordered lists via keyboard.</p>
  
  <p>Does anyone have any tips? I have a feeling its more of a CSS issue than html.</p>
  
  <p>RELATED CSS:</p>
  
  <pre><code>/* MENU */
  
  
  #cssmenu{
      border:none;
      border:0px;
      margin:0px;
      padding:0px;
      font: 67.5% 'Lucida Sans Unicode', 'Bitstream Vera Sans', 'Trebuchet Unicode MS', 'Lucida Grande', Verdana, Helvetica, sans-serif;
      font-size:11px;
      font-weight:bold;   
      }
  #cssmenu ul{
      background:#333333;
      height:39px;
      list-style:none;
      margin:0;
      padding:0;
      display: table;
      width: 100%;
  
      }
  #cssmenu li{
      padding:0px;
      display: table-cell;
      width: 115px;
      }
  
  #cssmenu li a{
      background:#333333 url('../images/seperator.gif') bottom right no-repeat;
      color:#FFF;
      display:block;
      font-weight:normal;
      line-height:39px;
      margin:0px;
      padding:0px 0px;
      text-align:center;
      text-decoration:none;
      width: 115px;
  
      }
  
  
  
  #cssmenu li a:hover, #cssmenu ul li:hover a{
      background: #2580a2;
      color:#FFFFFF;
      text-decoration:none;
      float: none;
      }
  #cssmenu li ul{
      background:#333333;
      display:none;
      height:auto;
      padding:0px;
      margin:0px;
      border:0px;
      position:absolute;
      width:230px;
      z-index:200;
      /*top:1em;
      /*left:0;*/
      }
  #cssmenu li:hover ul{
      display:block;
  
      }
  #cssmenu li li {
      background:url('../images/sub_sep.gif') bottom left no-repeat;
      display:block;
      float:none;
      margin:0px;
      padding:0px;
      width:230px;
      }
  #cssmenu li:hover li a{
      background:none;
      }
  #cssmenu li ul a{
      display:block;
      height:35px;
      font-size:10px;
      font-style:normal;
      margin:0px;
      padding:0px 10px 0px 15px;
      text-align:left;
      width: 205px;
  
      }
  #cssmenu li ul a:hover, #cssmenu li ul li:hover a{
      background:#2580a2 url('../images/hover_sub.gif') center left no-repeat;
      border:0px;
      color:#ffffff;
      text-decoration:none;
      width: 205px;
  
      }
  #cssmenu p{
      clear:left;
      }  
  
  :focus {outline:none;}
  ::-moz-focus-inner {border:0;}
  </code></pre>
  
  <p>RELATED HTML CODE:</p>
  
  <pre><code>&lt;div id="cssmenu"&gt;                                  &lt;ul&gt;                &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:HOMEPAGE:2059103169:pc=PC_90001"&gt;Home&lt;/a&gt;&lt;/li&gt;          
                      &lt;li class="has-sub"&gt;                &lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_90002"&gt;Operations&lt;/a&gt;             &lt;ul&gt;            
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_90003"&gt;Individuals&lt;/a&gt;                        
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_90123"&gt;Aircraft owners&lt;/a&gt;                        
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_90276"&gt;Aircraft operators &lt;/a&gt;                        
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_90389"&gt;Flight training&lt;/a&gt;                        
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_90405"&gt;Aerodromes&lt;/a&gt;                     
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_90447"&gt;Office of airspace regulation&lt;/a&gt;                      
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_93439"&gt;Sport aviation&lt;/a&gt;                     
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_93379"&gt;Class D&lt;/a&gt;                        
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_100058"&gt;Non-towered aerodromes&lt;/a&gt;                        
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_90385"&gt;Dangerous goods&lt;/a&gt;                        
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_100808"&gt;Ground operations&lt;/a&gt;                     
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_100847"&gt; Non-compliance notice &lt;/a&gt;                       
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_100374"&gt;Unmanned Aircraft Systems (UAS) &lt;/a&gt;                      
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_100705"&gt;General Aviation (GA) task force&lt;/a&gt;                      
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_100852"&gt;Regional Aviation Safety Forum (RASF)&lt;/a&gt;                     
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="http://casa.gov.au/aod" target="_top"&gt;Drug and Alcohol Management Plans&lt;/a&gt;                        
        &lt;/li&gt;
                      &lt;/ul&gt;&lt;/li&gt;          
                      &lt;li class="has-sub"&gt;                &lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_90473"&gt;Airworthiness&lt;/a&gt;              &lt;ul&gt;            
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_100610"&gt;Maintenance regulations&lt;/a&gt;                       
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_90474"&gt;Personnel&lt;/a&gt;                      
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_90496"&gt;Certification and design&lt;/a&gt;                       
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_90507"&gt;Manufacturing&lt;/a&gt;                      
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_90515"&gt;Continuing airworthiness&lt;/a&gt;                       
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_90822"&gt;Airworthiness directives&lt;/a&gt;                       
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_90821"&gt;Maintenance organisations&lt;/a&gt;                      
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_101038"&gt;Flight test and evaluation&lt;/a&gt;                        
        &lt;/li&gt;
                      &lt;/ul&gt;&lt;/li&gt;          
                      &lt;li class="has-sub"&gt;                &lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_90900"&gt;Regulations &amp;amp; policy&lt;/a&gt;               &lt;ul&gt;            
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_90902"&gt;Current rules&lt;/a&gt;                      
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:PWA:2059103169:pc=PC_91070"&gt;Changing the rules&lt;/a&gt;                      
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91181"&gt;Enforcement action&lt;/a&gt;                     
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:PWA:2059103169:pc=PC_91190"&gt;Policy notices&lt;/a&gt;                      
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_100396"&gt;Australia's state safety program&lt;/a&gt;                      
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_101078"&gt;Performance based navigation (PBN)&lt;/a&gt;                        
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_101326"&gt;Licensing regulations&lt;/a&gt;                     
        &lt;/li&gt;
                      &lt;/ul&gt;&lt;/li&gt;          
                      &lt;li class="has-sub"&gt;                &lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91263"&gt;Manuals &amp;amp; forms&lt;/a&gt;                &lt;ul&gt;            
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91264"&gt;Manuals&lt;/a&gt;                        
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91308"&gt;Forms&lt;/a&gt;                      
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91316"&gt;CASA online store&lt;/a&gt;                      
        &lt;/li&gt;
                      &lt;/ul&gt;&lt;/li&gt;          
                      &lt;li class="has-sub"&gt;                &lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91314"&gt;Education&lt;/a&gt;              &lt;ul&gt;            
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_101349"&gt;AviationWorx&lt;/a&gt;                      
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_100101"&gt;eLearning catalogue&lt;/a&gt;                       
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91346"&gt;Flight Safety Australia&lt;/a&gt;                        
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_90006"&gt; Pilot guides and information &lt;/a&gt;                     
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_100138"&gt;OnTrack&lt;/a&gt;                       
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_100994"&gt;Human factors&lt;/a&gt;                     
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91430"&gt;Safety management systems&lt;/a&gt;                      
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91329"&gt;Seminars and workshops&lt;/a&gt;                     
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91317"&gt;Aviation safety advisers&lt;/a&gt;                       
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91455"&gt;Advice for air travellers&lt;/a&gt;                      
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91316"&gt;CASA online store&lt;/a&gt;                      
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_101317"&gt;Out-n-Back&lt;/a&gt;                        
        &lt;/li&gt;
                      &lt;/ul&gt;&lt;/li&gt;          
                      &lt;li class="has-sub"&gt;                &lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91488"&gt;Services&lt;/a&gt;               &lt;ul&gt;            
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91489"&gt;Licences and registrations&lt;/a&gt;                     
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91510"&gt;Service standards and fees&lt;/a&gt;                     
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:PWA:2059103169:pc=PC_91499"&gt;Self Service Portal&lt;/a&gt;                     
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91517"&gt;Permission application centre (PAC)&lt;/a&gt;                        
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91521"&gt;Aviation medicals&lt;/a&gt;                      
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_100450"&gt;Delegates and authorised persons&lt;/a&gt;                      
        &lt;/li&gt;
                      &lt;/ul&gt;&lt;/li&gt;          
                      &lt;li class="has-sub"&gt;                &lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91621"&gt;About CASA&lt;/a&gt;             &lt;ul&gt;            
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91622"&gt;Contact CASA&lt;/a&gt;                       
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_93342"&gt;CASA board&lt;/a&gt;                     
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91668"&gt;CASA's Director&lt;/a&gt;                        
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_91703"&gt;Recent media releases &lt;/a&gt;                     
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_92568"&gt;Corporate publications&lt;/a&gt;                     
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_100448"&gt;CASA on Twitter&lt;/a&gt;                       
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_92918"&gt;Corporate policy&lt;/a&gt;                       
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_92936"&gt;Careers at CASA&lt;/a&gt;                        
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_92956"&gt;Research and statistics&lt;/a&gt;                        
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_100223"&gt;International Engagement&lt;/a&gt;                      
        &lt;/li&gt;
                      &lt;li&gt;&lt;a href="HTTP://wcmsdev/scripts/nc.dll?WCMS:STANDARD:2059103169:pc=PC_100330"&gt;CASA mailing lists&lt;/a&gt;                        
        &lt;/li&gt;
                      &lt;/ul&gt;&lt;/li&gt;          
  &lt;/ul&gt;
  &lt;/div&gt;
  </code></pre>