function xAddEventListener(e,eT,eL,cap)
{
  if(!(e=xGetElementById(e)))return;
  eT=eT.toLowerCase();
  if(e.addEventListener)e.addEventListener(eT,eL,cap||false);
  else if(e.attachEvent)e.attachEvent('on'+eT,eL);
  else {
    var o=e['on'+eT];
    e['on'+eT]=typeof o=='function' ? function(v){o(v);eL(v);} : eL;
  }
}


function xWalkUL(pu,d,f,lv)
{
  var r,cu,li=xFirstChild(pu);
  if (!lv){lv=0;}
  while(li){
    cu=xFirstChild(li,'ul');
    r=f(pu,li,cu,d,lv);
    if(cu){if(!r||!xWalkUL(cu,d,f,lv+1)){return 0;};}
    li=xNextSib(li);
  }
  return 1;
}

function xNextSib(e,t)
{
  e = xGetElementById(e);
  var s = e ? e.nextSibling : null;
  while (s) {
    if (s.nodeType == 1 && (!t || s.nodeName.toLowerCase() == t.toLowerCase())){break;}
    s = s.nextSibling;
  }
  return s;
}
function xGetElementById(e)
{
  if(typeof(e)=='string') {
    if(document.getElementById) e=document.getElementById(e);
    else if(document.all) e=document.all[e];
    else e=null;
  }
  return e;
}
function xGetComputedStyle(e, p, i)
{
  if(!(e=xGetElementById(e))) return null;
  var s, v = 'undefined', dv = document.defaultView;
  if(dv && dv.getComputedStyle){
    s = dv.getComputedStyle(e,'');
    if (s) v = s.getPropertyValue(p);
  }
  else if(e.currentStyle) {
    v = e.currentStyle[xCamelize(p)];
  }
  else return null;
  return i ? (parseInt(v) || 0) : v;
}
function xFirstChild(e,t)
{
  e = xGetElementById(e);
  var c = e ? e.firstChild : null;
  while (c) {
    if (c.nodeType == 1 && (!t || c.nodeName.toLowerCase() == t.toLowerCase())){break;}
    c = c.nextSibling;
  }
  return c;
}