// Copyright (c) 2006 Industrial Video & Control Co. LLC.  All rights reserved. 
// Create XMLHttp object for handling Http request
function createRequest() {
    var oXmlHttp = null;    
    if (typeof XMLHttpRequest != "undefined") { // Non Microsoft IE
        oXmlHttp = new XMLHttpRequest();
        //alert("Non IE, ready state:" + oXmlHttp.readyState);
    }
    else if (window.ActiveXObject) { // Micrsoft IE
        var aVersions = [ "MSXML2.XMLHttp.5.0", "MSXML2.XMLHttp.4.0", "MSXML2.XMLHttp.3.0", "MSXML2.XMLHttp", "Microsoft.XMLHttp" ];
        for (var i = 0; i < aVersions.length; i++) {
            try {
                oXmlHttp = new ActiveXObject(aVersions[i]);
                //alert("IE " + aVersions[i] + " ready state: " + oXmlHttp.readyState);
                break;
            }
            catch (oError){
                // Do nothing
            }
        }                                
    }    
    return oXmlHttp;
}