IPython Notebook: Redefine Shift-Enter

custom.js

var add_edit_shortcuts = {
        'shift-enter' : {
            help    : 'run cell, select next codecell',
            help_index : 'bb',
            handler : function (event) {
                IPython.notebook.execute_cell_and_select_below();
                // find next CodeCell and go into edit mode if possible, else stay in next cell
                var i;
                for (i = IPython.notebook.get_selected_index(); i < IPython.notebook.ncells() ;i++) {
                    var cell = IPython.notebook.get_cell(i);
                    if (cell instanceof IPython.CodeCell) {
                        IPython.notebook.select(i);
                        IPython.notebook.edit_mode();
                        break;
                    }
		}
                return false;
            }
        },
};

IPython.keyboard_manager.edit_shortcuts.add_shortcuts(add_edit_shortcuts);