this.canvas_.height = this.height_;
this.canvas_.style.width = this.width_ + "px"; // for IE
this.canvas_.style.height = this.height_ + "px"; // for IE
this.canvas_.height = this.height_;
this.canvas_.style.width = this.width_ + "px"; // for IE
this.canvas_.style.height = this.height_ + "px"; // for IE