function th_mk_field(count, fields_a, vals_a, j, tc)
{
  if ( fields_a[j] == "counter" ) {
    return "";
  }
  else if ( fields_a[j] == "titol" ) {
    var url=PHP_SELF+'&action=mostrar_pagina&counter_codi='+count;
    return "<a href='"+url+"'>"+vals_a[j]+"</a>";
  }    
  else if ( fields_a[j] == "data" ) {
    return "<span class=\"subtitol\"> <font color=\"#CC0000\">"+data_str(vals_a[j])+"</font></span>";
  }    
  else {
    return vals_a[j];
  } 
}