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
sb.append(")"); 
				elm.setAttribute("onmousedown", 
						"toggleLabelsVisibility(evt, " 
								+ sb.toString() + ")"); 							
				setCursor(elm);
	
			}
		}
		
		
	}
	/**
	 * Helper function that will determine if the source object is a series component of the chart.
	 * 
	 * @param src StructureSource that is stored in the primitive render event.
	 * @return null if the source object is not a series otherwise it returns the StructureSource.
	 */
	private StructureSource isSeries(StructureSource src){
		if (src instanceof WrappedStructureSource){
			WrappedStructureSource wss = (WrappedStructureSource)src;
			while (wss != null){
				if (wss.getType() == StructureType.SERIES) {
					return wss;
				}
				if (wss.getParent().getType() == StructureType.SERIES){
					return wss.getParent();
				}
				if (wss.getParent() instanceof WrappedStructureSource)
					wss = (WrappedStructureSource)wss.getParent();
				else