function showhidediv(id){
	for(i=1; i<changei; i++) {
		document.getElementById('tag_'+i).style.display='block';
		document.getElementById('ntag_'+i).style.display='none';
	}
  try{
    var panel=document.getElementById(id);
    var panel2=document.getElementById('n'+id);
    if(panel){
      if(panel.style.display=='none'){
        panel.style.display='block';
        panel2.style.display='none';
      }else{
        panel.style.display='none';
        panel2.style.display='block';
      }
    }
  }catch(e){}
}