var tdArr1 =new Array();
 
 tdArr1[0]="industry0";
 tdArr1[1]="industry1";
 tdArr1[2]="industry2";
 tdArr1[3]="industry3";
 tdArr1[4]="industry4";
 tdArr1[5]="industry5";
 tdArr1[6]="industry6";
 tdArr1[7]="industry7"; 
 tdArr1[8]="industry8";
 tdArr1[9]="industry9";
 tdArr1[10]="industry10";
 tdArr1[11]="industry11";
 tdArr1[12]="industry12";
 tdArr1[13]="industry13";
 tdArr1[14]="industry14";
 tdArr1[15]="industry15";
 tdArr1[16]="industry16";
 tdArr1[17]="industry17";
 tdArr1[18]="industry18";
 tdArr1[19]="industry19";
 tdArr1[20]="industry20";
 tdArr1[21]="industry21";
 tdArr1[22]="industry22";
 tdArr1[23]="industry23";
 tdArr1[24]="industry24";
 tdArr1[25]="industry25";
 tdArr1[26]="industry26";
 tdArr1[27]="industry27";
 tdArr1[28]="industry28";
 tdArr1[29]="industry29";
 tdArr1[30]="industry30";
 tdArr1[31]="industry31";
 tdArr1[32]="industry32";
 tdArr1[33]="industry33";
 tdArr1[34]="industry34";
 tdArr1[35]="industry35";
 tdArr1[36]="industry36";
 tdArr1[37]="industry37";
 tdArr1[38]="industry38";
 tdArr1[39]="industry39";
 tdArr1[40]="industry40";
 tdArr1[41]="industry41";
 tdArr1[42]="industry42";
 tdArr1[43]="industry43";
 tdArr1[44]="industry44";
 tdArr1[45]="industry45";

 function changeBg(index,arr)
 {
 
   for(i=0;i<arr.length;i++)
   {
      
      var tid=arr[i];
      //alert(document.getElementById(tid).background);
      var obj=document.getElementById(tid);
      if(obj !=null){
      if(i==index)
      {
        obj.className="bg_on";
        
      }else{
        obj.className="bg";
        //document.getElementById(tid).style.bgcolor="#red";
      
      }
}
   }
 }