custom.js

function run_and_focus (event) {
  var note         = IPython.notebook;
  var current_cell = note.get_selected_cell();

  note.execute_cell_range(note.get_selected_index(), note.ncells());

  current_cell.focus_cell();
  return false;
}

function run_before_and_focus (event) {
  var note         = IPython.notebook;
  var current_cell = note.get_selected_cell();

  note.execute_cell_range(0, note.get_selected_index()+1);

  current_cell.focus_cell();
  return false;
}

function to_cell (cell) {
  var note = IPython.notebook;

  note.get_cell(cell).focus_cell();

  return false;
}

function set_up_shortcuts () {
  Jupyter.keyboard_manager.command_shortcuts.add_shortcut('Ctrl-b', {
    help : 'run this cell and the cells below',
    help_index : 'zz',
    handler : run_and_focus
  }
  );

  Jupyter.keyboard_manager.edit_shortcuts.add_shortcut('Ctrl-b', {
    help : 'run this cell and the cells below',
    help_index : 'zz',
    handler : run_and_focus
  }
  );

  Jupyter.keyboard_manager.command_shortcuts.add_shortcut('Ctrl-Shift-b', {
    help : 'run from begining till this cell',
    help_index : 'zz',
    handler : run_before_and_focus
  }
  );

  Jupyter.keyboard_manager.edit_shortcuts.add_shortcut('Ctrl-Shift-b', {
    help : 'run from begining till this cell',
    help_index : 'zz',
    handler : run_before_and_focus
  }
  );


  Jupyter.keyboard_manager.command_shortcuts.add_shortcut('Ctrl-Home', {
    help : 'go to the first cell',
    help_index : 'zz',
    handler : function (event) {
      return to_cell(0);
    }
  }
  );

  Jupyter.keyboard_manager.command_shortcuts.add_shortcut('Ctrl-End', {
    help : 'go to the last cell',
    help_index : 'zz',
    handler : function (event) {
      return to_cell(IPython.notebook.ncells()-1);
    }
  }
  );

  Jupyter.keyboard_manager.command_shortcuts.add_shortcut('Z', {
    help : 'scroll to current cell',
    help_index : 'zz',
    handler : function (event) {
      IPython.notebook.scroll_to_cell(IPython.notebook.get_selected_index());
      return false;
    }
  }
  );

  return true;
}

$([IPython.events]).on("app_initialized.NotebookApp", set_up_shortcuts);