Bug 156084 __bookmark doesn't work in pdf with frameset servlet
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/ViewerHTMLActionHandler.java
String format = action.getFormat( );
			if ( format != null && format.length( ) > 0 )
			{
				link.append( ParameterAccessor.getQueryParameterString(
						ParameterAccessor.PARAM_FORMAT, format ) );
			}
			
			if ( action.getParameterBindings( ) != null )
			{
				Iterator paramsIte = action.getParameterBindings( ).entrySet( )
						.iterator( );
				while ( paramsIte.hasNext( ) )
				{
					Map.Entry entry = (Map.Entry) paramsIte.next( );
					try
					{
						String key = (String) entry.getKey( );
						Object valueObj = entry.getValue( );
						if ( valueObj != null )
						{
							
							
							String value = DataUtil.getDisplayValue( valueObj );
							link
									.append( ParameterAccessor
											.getQueryParameterString(
													URLEncoder
															.encode(
																	key,
																	ParameterAccessor.UTF_8_ENCODE ),