// -----------------------------------------------------------------------------
// The following code snippets have been copied from http://cross-browser.com.
// -----------------------------------------------------------------------------

// xClientWidth, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xClientWidth()
{
  var v=0,d=document,w=window;
//if(d.compatMode == 'CSS1Compat' && !w.opera && d.documentElement && d.documentElement.clientWidth)  // :BUGFIX: &&!w.opera is nonsense, causes this function to fail in Opera 9.5 -aj
  if(d.compatMode == 'CSS1Compat' && d.documentElement && d.documentElement.clientWidth)
    {v=d.documentElement.clientWidth;}
  else if(d.body && d.body.clientWidth)
    {v=d.body.clientWidth;}
  else if(xDef(w.innerWidth,w.innerHeight,d.height)) {
    v=w.innerWidth;
    if(d.height>w.innerHeight) v-=16;
  }
  return v;
}

// xClientHeight, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xClientHeight()
{
  var v=0,d=document,w=window;
//if(d.compatMode == 'CSS1Compat' && !w.opera && d.documentElement && d.documentElement.clientHeight)  // :BUGFIX: &&!w.opera is nonsense, causes this function to fail in Opera 9.5 -aj
  if(d.compatMode == 'CSS1Compat' && d.documentElement && d.documentElement.clientHeight)
    {v=d.documentElement.clientHeight;}
  else if(d.body && d.body.clientHeight)
    {v=d.body.clientHeight;}
  else if(xDef(w.innerWidth,w.innerHeight,d.width)) {
    v=w.innerHeight;
    if(d.width>w.innerWidth) v-=16;
  }
  return v;
}

// xDef, Copyright 2001-2006 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xDef()
{
  for(var i=0; i<arguments.length; ++i){if(typeof(arguments[i])=='undefined') return false;}
  return true;
}

// xAppendChild, Copyright 2001-2006 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xAppendChild(oParent, oChild)
{
  if (oParent.appendChild) return oParent.appendChild(oChild);
  else return null;
}

// xDeleteChild, Copyright 2001-2006 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xDeleteChild(oParent, oChild)
{
  if (oParent.removeChild) return oParent.removeChild(oChild);
  else return null;
}

// xGetElementById, Copyright 2001-2006 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

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;
}

// xFirstChild, 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 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;
}

// xGetElementsByTagName, Copyright 2002-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xGetElementsByTagName(t,p)
{
  var list = null;
  t = t || '*';
  p = p || document;
  if (typeof p.getElementsByTagName != 'undefined') { // DOM1
    list = p.getElementsByTagName(t);
    if (t=='*' && (!list || !list.length)) list = p.all; // IE5 '*' bug
  }
  else { // IE4 object model
    if (t=='*') list = p.all;
    else if (p.all && p.all.tags) list = p.all.tags(t);
  }
  return list || new Array();
}

// xCreateElement, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xCreateElement(sTag)
{
  if (document.createElement) return document.createElement(sTag);
  else return null;
}