// If you have assigned different script names to the
// boxes containing the routing list names
// change the names in these two variables to match:

var routeName1 = "route1";  // box containing routing list
var routeName2 = "route2";  // empty box for second half of routing list

// If your box height is not 5, change the boxHeight value below

var boxHeight = 5;            // maximum height of routing list box
var maxCount = boxHeight * 2; // maximum number of names that can be shown

function onRecordOpen()
{
  var routeBox1;        // box named routeName1
  var routeBox2;        // box named routeName2
  var routeBox1Content; // content of routeBox1
  var linebreak;        // line break character


  // check for existence of boxes named above,
  // stopping if both are not found
  routeBox1 = Form.boxes(routeName1);
  if (!routeBox1)
    return;
  routeBox2 = Form.boxes(routeName2);
  if (!routeBox2)
    return;

  routeBox1Content = routeBox1.content;
  if (routeBox1Content != "")
      {

  // determine line break character
       if (routeBox1Content.search("\n") != -1)
         {
         linebreak = "\n";
         }
       else if (routeBox1Content.search("\r") != -1)
         {
         linebreak = "\r";
         }
       else
         {
          return;
         }

         var routeEntries = routeBox1Content.split(linebreak);
         var secondHalf = routeEntries.slice(boxHeight,maxCount);
         var secondBox = secondHalf.join(linebreak);
         routeBox2.content = secondBox;
      }
}