var TITEMS = [ 
 ["About Documents", "d-about.html", "9"],
 ["Using the Documents", "using.html", "2",
  ["Accessing Documents", "d-accessing.html", "11"],
  ["Add Folders", "d-addfolder.html", "11"],
  ["Upload a Document", "d-upload.html", "11"],
  ["Move/Copy a Document", "d-movecopy.html", "11"],
  ["Share a Document", "d-share.html", "11"],
  ["Search a Document", "d-search.html", "11"],
  ["Rename a Document", "d-rename.html", "11"],
  ["Delete a Document", "d-delete.html", "11"],
  ["Lock/Unlock a Document", "d-lock.html", "11"],
  ["Admin", "admin.html", "11"]
 ],
 ["Admin", "admin.html", "2",
  ["Application Documents", "d-apps.html", "11"],
  ["Bulk Upload", "d-bulk.html", "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 "";
}