Bug 178519 Problems in multi-rows header
Please see the attachments.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFTableLM.java
}
	}
	private boolean isColumnHidden( IColumn column )
	{
		String format = context.getFormat( );
		String formats = column.getVisibleFormat( );
		if ( formats != null
				&& formats.length( ) > 0
				&& ( formats.toUpperCase( ).indexOf( format.toUpperCase( ) ) >= 0 || formats
						.toUpperCase( ).indexOf(
								BIRTConstants.BIRT_ALL_VALUE.toUpperCase( ) ) >= 0 ) )
		{
			return true;
		}
		return false;
	}
	public void updateUnresolvedCell( int groupLevel, boolean dropAll )
	{
		String dropType = dropAll ? "all" : "detail"; 
		int dropValue = this.createDropID( groupLevel, dropType );
		if ( layout != null )
		{
			layout.resolveDropCells( dropValue );
		}
	}
	public void skipRow( RowArea row )
	{
		if ( layout != null )
		{
			layout.skipRow( row );