Bug 197585 URL Link error in Line-Chart output in PDF format
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFImageLM.java
*            the imageArea of the chart.
	 */
	private void processChartLegend( IImageContent imageContent,
			IImageArea imageArea )
	{
		if ( null == intrinsic )
		{
			return;
		}
		Object imageMapObject = imageContent.getImageMap( );
		boolean hasImageMap = ( imageMapObject != null )
				&& ( imageMapObject instanceof String )
				&& ( ( (String) imageMapObject ).length( ) > 0 );
		if ( hasImageMap )
		{
			createImageMap( (String) imageMapObject, imageArea );
		}
	}
	private void createImageMap( String imageMapObject, IImageArea imageArea )
	{
		Pattern pattern = Pattern
				.compile( "<AREA[^<>]*coords=\"([\\d,]*)\" href=\"([^<>\"]*)\" target=\"([^<>\"]*)\"/>" );
		Matcher matcher = pattern.matcher( imageMapObject );
		String url = null;
		String targetWindow = null;
		ArrayList areas = new ArrayList( );
		while ( matcher.find( ) )
		{
			try
			{