function deleteNode(nodeId, type) {
  if(confirm('Are you sure you want to delete this '+type+'?')) {
    var url = 'delete.php?del_id='+nodeId+'&type=node';
    window.location.href = url;
  }
}

function deleteUser(userId) {
  if(confirm('Are you sure you want to delete this user?')) {
    var url = 'delete.php?del_id='+nodeId+'&type=user';
    window.location.href = url;
  }
}