var xmlHttpReq = false;

function loadXMLDoc(lang)
{    
    var self = this;
    if (window.XMLHttpRequest)
    {
        self.xmlHttpReq = new XMLHttpRequest();
    }
    else
    {
        self.xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
    }
    var url = "language.php";
    if(lang == "EN")
    {
        url += "?lang=EN";
    }
    else
    {
        url += "?lang=ES";
    }
    //alert(url);
    self.xmlHttpReq.open("POST", url, true);
    self.xmlHttpReq.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded')
    self.xmlHttpReq.onreadystatechange = function() 
    {
        if (self.xmlHttpReq.readyState == 4) 
        {
            //alert(self.xmlHttpReq.responseText);
            location.reload(true);
        }
    }
    self.xmlHttpReq.send(null);
}