// xCollapsible r3, Copyright 2004-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

/**
function xMenu5(idUL, btnClass, idAutoOpen) // object prototype
{
  // Constructor

  var i, ul, btns, mnu = xGetElementById(idUL);
  btns = xGetElementsByClassName(btnClass, mnu, 'DIV');
  for (i = 0; i < btns.length; ++i) {
    ul = xNextSib(btns[i], 'UL');
    btns[i].xClpsTgt = ul;
    btns[i].onclick = btn_onClick;
    set_display(btns[i], 0);
  }
  if (idAutoOpen) {
    var e = xGetElementById(idAutoOpen);
    while (e && e != mnu) {
      if (e.xClpsTgt) set_display(e, 1);
      while (e && e != mnu && e.nodeName != 'LI') e = e.parentNode;
      e = e.parentNode; // UL
      while (e && !e.xClpsTgt) e = xPrevSib(e);
    }
  }
**/

//function xCollapsible(outerEle, bShow) // object prototype

function xCollapsible(outerEle, bShow, idAutoOpen) // object prototype
{
  // Constructor

  var container = xGetElementById(outerEle);
  if (!container) {return null;}
  var isUL = container.nodeName.toUpperCase() == 'UL';
  var i, trg, aTgt = xGetElementsByTagName(isUL ? 'UL':'DIV', container);
  for (i = 0; i < aTgt.length; ++i) {
    trg = xPrevSib(aTgt[i]);
  //  alert(trg.nodeName);
    if (trg && (isUL || trg.nodeName.charAt(0).toUpperCase() == 'H')) {
      aTgt[i].xTrgPtr = trg;
     aTgt[i].style.display = bShow ? 'block' : 'none';
      trg.style.cursor = 'pointer';
      trg.xTgtPtr = aTgt[i];
      trg.onclick = trg_onClick;
    }
  }
  //Jesus: para poder pasarle el nodo que queremos abierto
    if   (idAutoOpen) {
    	var e = document.getElementById(idAutoOpen);
    	while (e && e != container) {
     		e.style.display = 'block';
      while (e && e != container && e.nodeName != 'LI') e = e.parentNode;
      e = e.parentNode; // UL
     // while (e && !e.xClpsTgt) e = xPrevSib(e);
    }
  }
  
  // Private

  function trg_onClick()
  {
    var tgt = this.xTgtPtr.style;
    tgt.display = (tgt.display == 'none') ? "block" : "none";
  }

  // Public

  this.displayAll = function(bShow)
  {
    for (var i = 0; i < aTgt.length; ++i) {
      if (aTgt[i].xTrgPtr) {
        aTgt[i].style.display = bShow ? "block" : "none";
      }
    }
  };

  // The unload listener is for IE's circular reference memory leak bug.
  this.onUnload = function()
  {
    if (!container || !aTgt) {return;}
    for (i = 0; i < aTgt.length; ++i) {
      trg = aTgt[i].xTrgPtr;
      if (trg) {
        if (trg.xTgtPtr) {
          trg.xTgtPtr.TrgPtr = null;
          trg.xTgtPtr = null;
        }
        trg.onclick = null;
      }
    }
  };
}