function setLink2WebEntityToDel(tableid,id,index)
{
    var t = document.getElementById(tableid);
    t.rows[index+1].style.display = 'none'; // index + 1 per via dell'header
    
    var ch = document.getElementById('ch_link2webentity_todel');
    ch.value = ch.value + '_' + id;
    
}