var ajax = {};
ajax.xhr = {};
ajax.xhr.Request = function(url,params,callback, method){
this.url = url;
this.params = params;
this.callback = callback;
this.method = method;
this.send();
}
ajax.xhr.Request.prototype = {
getXMLHttpRequest: function(){
if(window.ActiveXObject){
try{
return new ActiveXObject("Msxml2.XMLHTTP");
}catch (e) {
try {
return new ActiveXObject("Microsoft.XMLHTTP");
} catch (e1) {
return null;
}
}
}else if(window.XMLHttpRequest){
return new XMLHttpRequest();
}else{
return null;
}
},
send: function() {
this.req = this.getXMLHttpRequest();
var httpMethod = this.method ? this.method : 'GET';
if(httpMethod != 'GET' && httpMethod != 'POST'){
httpMethod = 'GET';
}
var httpParams = (this.params == null || this.params == '')? null : this.params;
var httpUrl = this.url;
if(httpMethod == 'GET' && httpParams != null){
httpUrl = httpUrl + "?" + httpParams;
}
this.req.open(httpMethod, httpUrl, true);
this.req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
var request = this;
this.req.onreadystatechange = function(){
request.onStateChange.call(request);
}
this.req.send(httpMethod == 'POST' ? httpParams : null);
},
onStateChange: function(){
this.callback(this.req);
}
}
