function updateChart1(DOMId){
         var chartObj = getChartFromId("chart1Id");
         chartObj.setDataURL("HSBC2009Review.xml");
      }
      
      function updateChart2(DOMId){
         var chartObj = getChartFromId("chart1Id");
         chartObj.setDataURL("FUNDKING2009Review.xml");
      }
      
      function updateChart3(DOMId){
         var chartObj = getChartFromId("chart1Id");
         chartObj.setDataURL("TWSEC2009Review.xml");
      }