function getCookie(name) {
  var dc = document.cookie;
  var prefix = name + "=";
  var begin = dc.indexOf("; " + prefix);
  if (begin == -1) {
    begin = dc.indexOf(prefix);
    if (begin != 0) return null;
  } else
    begin += 2;
  var end = document.cookie.indexOf(";", begin);
  if (end == -1)
    end = dc.length;
  return unescape(dc.substring(begin + prefix.length, end));
}
// LIST ALL SHOW/HIDE ELEMENT IDS HERE
menus_array = new Array ('01', '02');
menus_status_array = new Array ();// remembers state of switches
img_close = '../images/geral/bloco/base_fechar.gif';
img_open = '../images/geral/bloco/base_abrir.gif';

function showHideSwitch (theid, pimgopen, pimgclose) {
  if (document.getElementById) {
    var switch_id = document.getElementById(theid);
    var imgid = theid+'Button';
    var button_id = document.getElementById(imgid);
    if(menus_status_array[theid] == null) {
    	menus_status_array[theid] = switch_id.className == 'showSwitch' ? 'show' : 'hide';
    }
    if (menus_status_array[theid] != 'show') {
      button_id.setAttribute ('src', pimgclose != null ? pimgclose : img_close);
      switch_id.className = 'showSwitch';
	  menus_status_array[theid] = 'show';
	  document.cookie = theid+'=show';
    }else{
      button_id.setAttribute ('src', pimgopen != null ? pimgopen : img_open);
      switch_id.className = 'hideSwitch';
	  menus_status_array[theid] = 'hide';
	  document.cookie = theid+'=hide';
    }
  }
}

function resetMenu () { // read cookies and set menus to last visited state
  if (document.getElementById) {
    for (var i=0; i<menus_array.length; i++) {
      var idname = menus_array[i];
      var switch_id = document.getElementById(idname);
      var imgid = idname+'Button';
      var button_id = document.getElementById(imgid);
      if(button_id && switch_id) {
	      if (getCookie(idname) == 'show') {
		    button_id.setAttribute ('src', img_close);
	        switch_id.className = 'showSwitch';
		    menus_status_array [idname] = 'show';
		  }else{
		    button_id.setAttribute ('src', img_open);
	        switch_id.className = 'hideSwitch';
		    menus_status_array [idname] = 'hide';
		  }
	  }
    }
  }
}