function crossCount(g) {
  var cc = 0;
  var ordering = util.ordering(g);
  for (var i = 1; i < ordering.length; ++i) {
    cc += twoLayerCrossCount(g, ordering[i-1], ordering[i]);
  }
  return cc;
}
function crossCount(g) {
  var cc = 0;
  var ordering = util.ordering(g);
  for (var i = 1; i < ordering.length; ++i) {
    cc += twoLayerCrossCount(g, ordering[i-1], ordering[i]);
  }
  return cc;
}
function crossCount ( g ) { var cc = 0 ; var ordering = util . ordering ( g ) ; for ( var i = 1 ; i < ordering . length ; ++ i ) { cc += twoLayerCrossCount ( g , ordering [ i - 1 ] , ordering [ i ] ) ; } return cc ; }
/*
Returns the cross count for the given graph.
/ * Returns the cross count for the given graph .