Bug 193467 URL hyperlink can't work in chart viewer
chart/org.eclipse.birt.chart.reportitem/src/org/eclipse/birt/chart/reportitem/ChartReportItemPresentationImpl.java
{
			outputFormat = (String) of;
		}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.extension.IReportItemPresentation#setLocale(java.util.Locale)
	 */
	public final void setLocale( Locale lcl )
	{
		if ( rtc == null )
		{
			rtc = new RunTimeContext( );
		}
		rtc.setLocale( lcl );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.extension.IReportItemPresentation#setOutputFormat(java.lang.String)
	 */
	public void setOutputFormat( String sOutputFormat )
	{
		if ( sOutputFormat.equalsIgnoreCase( "HTML" ) ) 
		{
			if ( isOutputRendererSupported( outputFormat ) )
			{
				sExtension = outputFormat;
			}