function ChangeCt(id,number) {

  ctblock = new Array(number);
  tds = new Array(number);
  
  var imf=document.getElementById("indexfirst");
  imf.style.display='none';
  
   for(var i=0; i<number; i++){
     ctblock[i]=document.getElementById("ctblock_"+i);
	 tds[i]=document.getElementById("ct_"+i);
     if(i==id) {
	   ctblock[i].style.display='block';
	   tds[i].className='temp';
     }
	 else {
	  ctblock[i].style.display='none';
	  tds[i].className='';
     }
   }
}

function BrPlus(number) {
  elm = new Array(number);
  for (var n=0; n<number; n++){
     elm[n] = document.getElementById("imglogo_"+n);
  }
  imin=0;
  ln=number-1;
  imax=ln;
  for (var n=1; n<number-1; n++){
    if(elm[n].style.display=='inline' && elm[n-1].style.display=='none') imin=n;
	if(elm[n].style.display=='inline' && elm[n+1].style.display=='none') imax=n;
  }
  if(imax!=ln){
    imaxn=imax+1;
	iminn=imin+1;
	for(var i=iminn; i<imaxn+1; i++){
      elm[i].style.display='inline';
    }
	if(imaxn!=ln){
	  for(var i=imaxn+1; i<number; i++){
        elm[i].style.display='none';
      }
	}
	for(var i=0; i<iminn; i++){
        elm[i].style.display='none';
    }
  }
}

function BrMinus(number) {
  elm = new Array(number);
  for (var n=0; n<number; n++){
     elm[n] = document.getElementById("imglogo_"+n);
  }
  imin=0;
  ln=number-1;
  imax=ln;
  for (var n=1; n<number-1; n++){
    if(elm[n].style.display=='inline' && elm[n-1].style.display=='none') imin=n;
	if(elm[n].style.display=='inline' && elm[n+1].style.display=='none') imax=n;
  }
  if(imin!=0){
    imaxn=imax-1;
	iminn=imin-1;
	for(var i=iminn; i<imaxn+1; i++){
      elm[i].style.display='inline';
    }
	if(iminn!=0){
	  for(var i=0; i<iminn; i++){
        elm[i].style.display='none';
      }
	}
	for(var i=imaxn+1; i<number; i++){
        elm[i].style.display='none';
    }
  }
}