function suiNewReqObj() {
	var req_obj=null;
	if(/MSIE (\d+\.\d+);/.test(navigator.userAgent) && new Number(RegExp.$1)<=6) {
		req_obj=new ActiveXObject("Microsoft.XMLHTTP");
        }else{
		req_obj=new XMLHttpRequest();
	}
	return req_obj;
}