Bug 132630 Additional markers can not support interactivity
Additional markers can not support interactivity Steps: 1.Create a line chart 2.Set Y series marker to additional marker such as star or ellipse 3.Add a interactivity such as showTooltip to Y series 4.Preview in web viewer Actual results: 1.Additional markers can not support interactivity Expected Results: 1.Additional markers can nsupport interactivity
chart/org.eclipse.birt.chart.device.svg/src/org/eclipse/birt/chart/device/svg/SVGRendererImpl.java
{
		Document svgDocument = createSvgDocument( );
		svgDocument.getDocumentElement( ).setAttribute( "width", 
				Double.toString( width ) );
		svgDocument.getDocumentElement( ).setAttribute( "height", 
				Double.toString( height ) );
		return svgDocument;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.device.IStructureDefinitionListener#changeStructure(org.eclipse.birt.chart.event.StructureChangeEvent)
	 */
	public void changeStructure( StructureChangeEvent scev )
	{
	}
	protected void removeGroupStructure( Object block )
	{
		if ( ( block instanceof TitleBlock )
				|| ( block instanceof Legend )
				|| ( block instanceof Plot )
				|| ( block instanceof LabelBlock )
				|| ( block instanceof Series )
				|| ( block instanceof DataPointHints ) )
			svggc.popParent( );
	}
	protected void addGroupStructure( Object block )
	{
		if ( block instanceof TitleBlock )
		{