Show/Hide guides via JavaScript?

Show/Hide guides via JavaScript?

With this script I can delete all guides in all open documents:

for (d = 0; d < app.documents.length; d++) {

  var targetDocument = app.documents[d];

  activeDocument = targetDocument;

  var doc = app.activeDocument;

  for (var i = doc.pathItems.length-1; i >= 0; i--) {

  var p = doc.pathItems[i];

  if (p.guides == true) {

  p.remove();

  }

  }

}

But, how can I modify this script for show/hide guides?

Thanks.