Xml parse works in IC but not FF?

1

could some one give me an idea why my xml only gets parsed by IE and not FF?

much thanks for any clues (-:

 
 
function parseArticlesList()
{
try //Internet Explorer
  {
  xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
  }
catch(e)
  {
  try //Firefox, Mozilla, Opera, etc.
    {
    xmlDoc=document.implementation.createDocument("","",null);
    }
  catch(e)
    {
    alert(e.message);
    return;
    }
  }
 xmlDoc.async = false;
 xmlDoc.load("scripts/articles.xml");
 var articles = new Array();
 var i = 0;
 var i2 = 0;
 var artParent = xmlDoc.getElementsByTagName("posts")[0];
 
 alert(artParent.childNodes[3].childNodes[0].nodeValue);
 for(i;i<10;i++)
 {
  articles.push(artParent.childNodes*);
 }
 for(i2;i2<articles.length;i2++)
 {
  document.write(articles[i2].childNodes[0].nodeValue+"<br/>");
 }
}

edit
if you want to see it in action go to, and notice the left column

http://www.wearechangevirginia.org/new