function divChg(nu,gr) {

  if (nu==1){
  document.getElementById(gr+'1').background="/Templets/Image/bc_13.gif";
  document.getElementById(gr+'2').background="/Templets/Image/bc_14.gif";
  document.getElementById(gr+'3').background="/Templets/Image/bc_14.gif";
 
  document.getElementById(gr+'d1').style.display='';
  document.getElementById(gr+'d2').style.display='none';
  document.getElementById(gr+'d3').style.display='none';

  }else if(nu==2){
  document.getElementById(gr+'1').background="/Templets/Image/bc_14.gif";
  document.getElementById(gr+'2').background="/Templets/Image/bc_13.gif";
  document.getElementById(gr+'3').background="/Templets/Image/bc_14.gif";
 
  document.getElementById(gr+'d1').style.display='none';
  document.getElementById(gr+'d2').style.display='';
  document.getElementById(gr+'d3').style.display='none';

  }else if(nu==3){
  document.getElementById(gr+'1').background="/Templets/Image/bc_14.gif";
  document.getElementById(gr+'2').background="/Templets/Image/bc_14.gif";
  document.getElementById(gr+'3').background="/Templets/Image/bc_13.gif";
 
  document.getElementById(gr+'d1').style.display='none';
  document.getElementById(gr+'d2').style.display='none';
  document.getElementById(gr+'d3').style.display='';

  }
  
}