code: function(value)
  	{
  		if(value.position != "bottom" && value.position != "top") value.position = "bottom";
  		this._removeAxisFunctions(this._xAxisLabelFunctions);
  		value = this._getClonedAxis(value);
  		this._xAxisLabelFunctions.push(value.labelFunction);
  		this._swf.setHorizontalAxis(value);
  	}
docs: Setter for the xAxis attribute.
  
  @method _setXAxis
  @private