var xmlhttp=null;
if (window.XMLHttpRequest) {
xmlhttp = new XMLHttpRequest();
}
if (!xmlhttp&&window.ActiveXObject)
{
try
{
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP.5.0")
}
catch(e)
{
try
{
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP.4.0")
}
catch(e)
{
try
{
new ActiveXObject("Msxml2.XMLHTTP")
}
catch(e)
{
try{new ActiveXObject("Microsoft.XMLHTTP")}catch(e){}
}
}
}
}
if(!xmlhttp){alert("XMLHTTP不可用。即将跳转到非Ajax页面。");location="nonAjax.htm"}