function display_layers(id)
      {
         var layers = new Array('welcome', 'subsidiaries', 'details', 'world_map');

         for (var i=0; i<layers.length; i++)
         {
            if (i==id)
            {
                var show_layer = layers[id];
                document.getElementById(show_layer).style.display = "block";

                if(id==2)
                 {
                      document.getElementById('subsidiaries').style.display = "block";
                 }
            }
            else
            {
                 var _layer = layers[i];
                 document.getElementById(_layer).style.display = "none";
            }
         }
      }

      function display_SubsidiaryDetails(id)
      {
          var layers = new Array('dtlAMT', 'dtlAmalgamatedTrading', 'dtlAmalCanada', 'dtlWilliamRowland', 'dtlAlloysMetals', 'dtlAmalgametSEA', 'dtlConsolidatedAlloysNZ', 'dtlAmalgametINC', 'dtlConsolidatedAlloys', 'dtlAMCPhysicalTrading', 'dtlBritishMetalCorpIndia', 'dtlDebroChem', 'dtlThermoxZin', 'dtlThaiSmelt', 'dtlBrooksideMetalComp', 'dtlMil_Ver', 'dtlKeelingWalker', 'dtlWilkinsonSteel', 'dtlNationalConcreteEast', 'dtlNationalConcreteWest', 'dtlBKSSurveys', 'dtlDebroSteel', 'dtlAMCTreasury', 'dtlEscoyHoldings', 'dtlExchangeIndustries', 'dtlShanghaiRepresentative');

       for (var i=0; i<layers.length; i++)
       {
        if (i==id)
        {
         var show_layer = layers[id];
         document.getElementById(show_layer).style.display = "block";
        }
        else
        {
         var _layer = layers[i];
         document.getElementById(_layer).style.display = "none";
        }
       }

      }

       function display_Products(id)
      {
           var layers = new Array('investment', 'option', 'lme', 'hiPurity', 'minorMetals', 'minerals', 'baseMetals', 'metalPowders', 'chemicalPharm', 'ferroAlloys', 'soldersFlux', 'nonFerrousMetalPowder', 'leadSheet', 'aluminumAlloys', 'copperAlloys', 'tinNtin', 'tinOxide', 'partProcess', 'heatExchange', 'carbonSteel', 'aluminum', 'stainlessSteel', 'concreteForming', 'domesticIndustrial', 'aerialSurvey', 'constructionProducts');

           for (var i=0; i<layers.length; i++)
           {
                if (i==id)
                {
                 var show_layer = layers[id];
                 document.getElementById(show_layer).style.display = "block";
                }
                else
                {
                 var _layer = layers[i];
                 document.getElementById(_layer).style.display = "none";
                }
           }
      }

      function GetProductName(name)
      {
         document.getElementById('SubsidProducts').innerHTML = name;
      }

      function changeBgImage()
      {
         document.getElementById('on').style.backgroundImage = "none";
         document.getElementById('productMenu').style.backgroundImage = "url(images/menu_bg_green.jpg)";
         document.getElementById('on').style.fontWeight = "normal";
         document.getElementById('productMenu').style.fontWeight = "bold";
         document.getElementById('world_map').style.display = "none";

         document.getElementById('title').style.display = "none";
         document.getElementById('products').style.display = "block";
      }