/**
一个简单的AJAX类
By:IVershuo.cN@Aerfa.NeT
**/
function AJAX() {
        var request = false;
        var aerfa=this;
try{
        request=new XMLHttpRequest();
}catch (trymicrosoft) {
        try {
                request=new ActiveXObject("Msxml2.XMLHTTP");
        }catch(othermicrosoft){
                try {
                        request=new ActiveXObject("Microsoft.XMLHTTP");
        }catch(failed){
                request=false;
        }
        }
}
if(!request){
        alert("朋友,这个?..非常抱歉的提示您:您需要换个比较新的浏览器来使用我们的网站!");
}
        this.method="POST";
        this.url;
        this.yb=true;
        this.content="";
        this.wait=function() {return;}
        this.ok=function(cbobj) {return;}
        this.send=function() {
                if(!this.method||!this.url||!this.yb) return false;
                request.open (this.method, this.url, this.yb);
                if(this.method=="POST") request.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
                request.onreadystatechange=function() {
                        if(request.readyState<4){
                                        aerfa.wait();
                        }else if(request.readyState==4) {
                                        aerfa.ok(request);
                        }
                }
                if(this.method=="POST") request.send(this.content);
                else request.send(null);
        }
}