Bug 145144 SVG Interactivity cannot highlight gradient colors
Create any SVG Chart with gradient colors on the series palette. Add interactivity on series to highlight them on mouseover for instance (or mouse click) The highlight doesn't work. It works for plain colors only.
chart/org.eclipse.birt.chart.device.svg/src/org/eclipse/birt/chart/device/svg/SVGGraphics2D.java
* 
	 * @param script the code that will be inlined in the generated svg output
	 */
	public void addScript(String script){
		scriptBuffer.append(script);	
	}
	
	/**
	 * Adds a script reference in the generated svg output.
	 * 
	 * @param ref the script reference that will be added to the generated svg output.
	 */
	public void addScriptRef(String ref){
		Element rootElem = dom.getDocumentElement( );
		Element scriptElem = dom.createElement( "script" ); 
		rootElem.appendChild( scriptElem );
		scriptElem.setAttribute( "language", "JavaScript" ); 
		scriptElem.setAttribute( "xlink:href", ref ); 		
	}
	public String getId() {
		return id;
	}
	public void setId(String id) {
		this.id = id;
	}
	/**
	 * Defer setting the stroke and color on an SVG element.
	 * 
	 * @return the state of the flag that ignores setting the stroke style and color on a svg element.
	 */