var TITEMS = [ 
 ["dns", null, "1",
  ["dns_123regcouk", "source/dns_123regco.htm", "11"],
  ["dns_drams_nameservers", "source/dns_drams_nameservers.htm", "11"],
  ["dns_enom_nameservers", "source/dns_enom_nameservers.htm", "11"],
  ["dns_godaddy_nameservers", "source/dns_godaddy_nameservers.htm", "11"],
  ["dns_namebargain_nameservers", "source/dns_namebargain.htm", "11"],
  ["dns_name_cheap", "source/dns_name_cheap.htm", "11"],
  ["dns_netsol_nameservers", "source/dns_netsol_nameservers.htm", "11"],
  ["dns_opensrs_nameservers", "source/dns_opensrs_nameservers.htm", "11"],
  ["dns_regfly_nameservers", "source/dns_regfly_nameservers.htm", "11"],
  ["dns_register_nameservers", "source/dns_register_nameservers.htm", "11"]
 ]
];


function arr_flatten (x) {
   var y = []; if (x == null) return y;
   for (var i=0; i<x.length; i++) {
      if (typeof(x[i]) == "object") {
         var flat = arr_flatten(x[i]);
         for (var j=0; j<flat.length; j++)
             y[y.length]=flat[j];
      } else {
         if ((i%3==0) && (x[i+1] != null))
          y[y.length]=x[i+1];
      }
   }
   return y;
}

function arr_findNext (url, cnt)
{
   var y = arr_flatten(TITEMS);
   for (var i = 0; i<y.length; i++) {
     if (y[i] == url) {
       ni = i + cnt;
       if (ni < 0) ni = 0;
       if (ni > y.length-1) ni = y.length-1;

       return y[ni];
     }
   }
   return "";
}