Bug 312531 Highlight works differently when run SvgInteractivityViewer.java [13]
chart/org.eclipse.birt.chart.device.svg/src/org/eclipse/birt/chart/device/svg/SVGInteractiveRenderer.java
if ( scriptEvent.equals( "onmouseover" ) ) {
				elm.setAttribute( "onmouseout", "TM.remove()" ); 
				if ( componentId != null )
					elm.setAttribute( "onmousemove", "TM.show(evt," + componentId + ")" ); 
				else
					elm.setAttribute( "onmousemove", "TM.show(evt)" ); 
			}
			else
			{
				if ( componentId != null )
				{
					elm.setAttribute( scriptEvent,
							wrapJS( bDblClick,
									"TM.toggleToolTip(evt," + componentId + ")" ) ); 
				}
				else
				{
					elm.setAttribute( scriptEvent,
							wrapJS( bDblClick,
									"TM.toggleToolTip(evt)" ) ); 
				}
			}
		}
	}
	/**
	 * @param elm
	 * @param src
	 * @param tg
	 * @param scriptEvent
	 * @param bDblClick