Bug 312531 Highlight works differently when run SvgInteractivityViewer.java [13]
chart/org.eclipse.birt.chart.device.svg/src/org/eclipse/birt/chart/device/svg/SVGGraphics2D.java
return styleClass;
	}
	public void setStyleClass( String styleClass )
	{
		this.styleClass = styleClass;
	}
	public void addCSSStyle( String className, String styleName,
			String styleValue )
	{
		styleBuffer.append( className )
				.append( "{" ).append( styleName ).append( ":" ).append( styleValue ).append( ";}" ); 
	}
	/**
	 * Inlines the script code in the generated svg output
	 * 
	 * @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 )