// JScript 文件
function createXMLHttps() 
{ 
    var ret = null; 
    try 
    { 
        ret = new ActiveXObject('Msxml2.XMLHTTP'); 
    } 
    catch (e) 
    { 
        try 
        { 
            ret = new ActiveXObject('Microsoft.XMLHTTP'); 
        } 
        catch (ee) 
        { 
            ret = null; 
        } 
    } 
    if (!ret && typeof XMLHttpRequest != 'undefined') 
        ret = new XMLHttpRequest(); 
    return ret; 
}