gistfile1.js

function HideShow () {};

HideShow.ATTRS = {
    styleSheet: {
        valueFn: '_styleSheetValFn'
    }
};

Y.mix(HideShow.prototype, {

    _stylePrefix: null,

    initializer: function () {
        var sheet = this.get('styleSheet');

        this._stylePrefix = this.get('boundingBox').get('id');

        Y.later(4000, this, function() {
            this.hideColumn('name');
        });
    },
    
    setColumnWidth: function (col, width) {
        
    }

    hideColumn: function (col) {
        var colSelector = '#' + this._stylePrefix + ' .' + this._cssPrefix + '-col-' + col;
        this.get('styleSheet').set(colSelector, {
            width: '1px',
            overflow: 'hidden',
            display: 'none'
        });
    },

    showColumn: function (col) {

    },

    _styleSheetValFn: function () {
        return Y.StyleSheet(this.get('boundingBox').get('id'));
    }
});

Y.DataTable.HideShow = HideShow;

Y.Base.mix(Y.DataTable, [HideShow]);