I have just found the problem. Others will probably experience the same problem so here is solution:
Change
Call renderChart("Column2D.swf?ChartNoDataText=Please select a factory from pie chart above to view detailed data.", "", "<chart></chart>", "FactoryDetailed", 600, 250, false, false)
to
Call renderChart("Column2D.swf?ChartNoDataText=Please select a factory from pie chart above to view detailed data.", "", "<chart></chart>", "FactoryDetailed", 600, 250, false, true)