How Do I Pass An Xml Data Into An Array?

if (window.XMLHttpRequest)
  {// code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp=new XMLHttpRequest();
  }
else
  {// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
xmlhttp.open("GET","data/stations_en.xml",false);
xmlhttp.send();
xmlDoc=xmlhttp.responseXML;


var x = xmlDoc.getElementsByTagName("station");


for(var t = 0;t < x.length; t++)
{

    var locations = [
        [x[t].getElementsByTagName("name")[0].childNodes[0].nodeValue],
        [x[t].getElementsByTagName("lattitude")[0].childNodes[0].nodeValue],
        [x[t].getElementsByTagName("longitude")[0].childNodes[0].nodeValue]
   ];
}
document.write(locations[0],locations[1],locations[2]);