Yahoo! UI Library

Y.mix(Y.Node.ATTRS, {
    offsetHeight: {
        setter: function(h) {
            Y.DOM.setHeight(this._node, h);
            return h;
        },

        getter: function() {
            return this._node.offsetHeight;
        }
    },

    offsetWidth: {
        setter: function(w) {
            Y.DOM.setWidth(this._node, w);
            return w;
        },

        getter: function() {
            return this._node.offsetWidth;
        }
    }
});

Y.mix(Y.Node.prototype, {
    sizeTo: function(w, h) {
        var node;
        if (arguments.length < 2) {
            node = Y.one(w);
            w = node.get('offsetWidth');
            h = node.get('offsetHeight');
        }

        this.setAttrs({
            offsetWidth: w,
            offsetHeight: h
        });
    }
});