function MM_nbGroup(event, grpName) { //v6.0
          var i,img,nbArr,args=MM_nbGroup.arguments;
          if (event == "init" && args.length > 2) {
            if ((img = MM_findObj(args[2])) != null && !img.MM_init) {
              img.MM_init = true; img.MM_up = args[3]; img.MM_dn = img.src;
              if ((nbArr = document[grpName]) == null) nbArr = document[grpName] = new Array();
              nbArr[nbArr.length] = img;
              for (i=4; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
                if (!img.MM_up) img.MM_up = img.src;
                img.src = img.MM_dn = args[i+1];
                nbArr[nbArr.length] = img;
            } }
          } else if (event == "over") {
            document.MM_nbOver = nbArr = new Array();
            for (i=1; i < args.length-1; i+=3) if ((img = MM_findObj(args[i])) != null) {
              if (!img.MM_up) img.MM_up = img.src;
              img.src = (img.MM_dn && args[i+2]) ? args[i+2] : ((args[i+1])? args[i+1] : img.MM_up);
              nbArr[nbArr.length] = img;
            }
          } else if (event == "out" ) {
            for (i=0; i < document.MM_nbOver.length; i++) {
              img = document.MM_nbOver[i]; img.src = (img.MM_dn) ? img.MM_dn : img.MM_up; }
          } else if (event == "down") {
            nbArr = document[grpName];
            if (nbArr)
              for (i=0; i < nbArr.length; i++) { img=nbArr[i]; img.src = img.MM_up; img.MM_dn = 0; }
            document[grpName] = nbArr = new Array();
            for (i=2; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
              if (!img.MM_up) img.MM_up = img.src;
              img.src = img.MM_dn = (args[i+1])? args[i+1] : img.MM_up;
              nbArr[nbArr.length] = img;
          } }
        }