var id_old = '';

function show(id) {
	if(id_old != '') {document.getElementById(id).className = 'off';}
	document.getElementById(id).className = 'on';
	id_old = id;
}
function hidd() {
  if(id_old != '') {document.getElementById(id_old).className = 'off';}
}

var id_old_d = '';
function show_w(id_d) {
	if(id_old_d != '') {document.getElementById(id_d).className = 'off_compare';}
	document.getElementById(id_d).className = 'on_compare';
	id_old_d = id_d;
}
function hidd_d(id_d) {
  document.getElementById(id_d).className = 'off_compare';
  //document.forma.'cv_'+id_d.checked=true;
}