var Ajax = { createXHR:function(){
if(window.XMLHttpRequest){
var xhr = new XMLHttpRequest();
return xhr;
}else if(window.ActiveXObject){
var xhr = new ActiveXObject("Microsoft.XMLHTTP");
return xhr;
}
},
sendRequest:function(method,url,data,callback){
var xhr = this.createXHR();
xhr.open(method,url);
if(method=="GET"){
xhr.send(null);
}else if(method=="POST"){
xhr.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
xhr.send(data);
}
xhr.onreadystatechange=function(){
if(xhr.readyState==4&&xhr.status==200){
var p = {
text:xhr.responseText,
xml:xhr.responseXML
}
callback(p);
}
}
}
};