function changeStyle(id) {
  if (eval('document.all.'+id+'.className') == 'pulsante_off'){
     a=eval('document.all.'+id);
     a.className = 'pulsante_on'
  }else{
     a=eval('document.all.'+id);
     a.className = 'pulsante_off'
  } 
  return true;
}

function handleImg(id) { 
  //alert(eval("document.getElementById('link"+id+"').style.color"));
  if (eval("document.getElementById('link"+id+"').style.color") == 'black'){
     a=eval("document.getElementById('link"+id+"').style");
     a.color = 'red';
     document.getElementById('listinoId').src='./img/listino_'+id+'.gif';
     for(j=1; j<=7; j++){
         if(j != id){
            a=eval("document.getElementById('link"+j+"').style");
            a.color = 'black';
         }
     }

  } 
  return true;
}