// Basic function
var URL_ROOT="";
var xmlHttp;
var oXmlDom;
function createAjaxObj()
{
	if (window.ActiveXObject) 
	{
		xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
	}
	else if (window.XMLHttpRequest) 
	{
		xmlHttp = new XMLHttpRequest();
	}
}

function createDocument() 
{
    var aVersions = [ "MSXML2.DOMDocument.5.0",
                      "MSXML2.DOMDocument.4.0",
                      "MSXML2.DOMDocument.3.0",
                      "MSXML2.DOMDocument",
                      "Microsoft.XmlDom"
                     ];

    for (var i = 0; i < aVersions.length; i++) 
    {
        try 
        {
            var oXmlDom = new ActiveXObject(aVersions[i]);
            return oXmlDom;
        }
        catch (oError)
        {
            //Do nothing

        }
    }
    throw new Error("MSXML is not installed.");
}