Bug 212246 Browsers keep poping up when click the series with interactivity Focus-Hyperlink [13]
chart/org.eclipse.birt.chart.device.extension/src/org/eclipse/birt/chart/device/image/JavaxImageIOWriter.java
{
		boolean supported = false;
		
		String s = getFormat( );
		if ( s != null )
		{
			Iterator it = ImageIO.getImageWritersByFormatName( s );
			if ( it.hasNext( ) )
			{
				supported = true;
			}
		}
		
		if ( !supported )
		{
			s = getMimeType( );
			if ( s != null )
			{
				Iterator it = ImageIO.getImageWritersByMIMEType( s );
				if ( it.hasNext( ) )
				{
					supported = true;
				}
			}
		}
		return supported;
	}
	/*
	 * (non-Javadoc)
	 *