Bug 128590 Tooltip of chart didn't show completely.
Description: Tooltip of chart didn't show completely. Steps to reproduce: 1. Preview attached report. 2. Move mouse from bottom/right into the chart. Expected result: Tooltip shows. Actual result: Tooltip didn't show completely.
chart/org.eclipse.birt.chart.device.svg/src/org/eclipse/birt/chart/device/svg/SVGRendererImpl.java
/**
	 * The  xmlns:xlink is
	 * "http:www.w3.org/1999/xlink".
	 */
	static private final String XMLNSXINK = "http:www.w3.org/1999/xlink"; 
	
	/**
	 * 
	 */
	private Object oOutputIdentifier = null;
	/**
	 * Document object that represents the SVG
	 */
	protected Document dom;
	
	/**
	 * SVG Graphic context
	 */
	protected SVGGraphics2D svggc;
	
	/**
	 * Element that represents the hot spot layer
	 */
	protected Element hotspotLayer;
	
	/**
	 * Property that determins if the SVG should resize to the containing element dimensions.
	 */
	protected boolean _resizeSVG = false;
	/*