function show_info_category(t,tip) {
  var a1 = document.getElementById(t+"1");
  var a2 = document.getElementById(t+"2");
  var a3 = document.getElementById(t+"3");
  var a4 = document.getElementById(t+t);


  if (tip == 'on') {
  var b1 = 'url(\'/images/bg_left_subcateg.gif\')';;
  var b2 = '#ffffff';
  var b3 = 'url(\'/images/bg_right_subcateg.gif\')';
  var b4 = '';
  }
  else
  {
  var b1 = 'url(\'/images/bg_left2_subcateg.gif\')';;
  var b2 = '#e7efff';
  var b3 = 'url(\'/images/bg_right2_subcateg.gif\')';
  var b4 = 'none';
  }

  a1.style.background = b1;
  a2.bgColor = b2
  a3.style.background = b3
  a4.style.display = b4;
  
  if (tip == 'on') {
    if (t != 'd') show_info_category('d', 'off'); 
    if (t != 'p') show_info_category('p', 'off'); 
    if (t != 'r') show_info_category('r', 'off');
  }
}