function xhrQuery(url, method) {	
	
	this.url = url;
	this.method = method;
	this.headers = new Array();
	this.posts = new Array();
	this.cookies = new Array();
	this.callback = null;
	this.async = true;
	
	this.reset = function () {
		this.headers = new Array();
		this.postData = new Array();
		this.cookies = new Array();
		this.callback = null;
		this.async = true;
	}
	
	this.addHeader = function (name, value) {
		var a = new Array();
		a['name'] = name;
		a['value'] = value;
		this.headers[this.headers.length] = a;
		return a;
	}
	
	this.addCookie = function (name, value) {
		var a = new Array();
		a['name'] = name;
		a['value'] = encodeURIComponent(value);
		this.cookies[this.cookies.length] = a;
		return a;
	}
	
	this.addPost = function (name, value) {
		var a = new Array();
		a['name'] = name;
		a['value'] = encodeURIComponent(value);
		this.posts[this.posts.length] = a;
		return a;
	}
	
	this.onError = function (status, statusText) {
		alert(status + " : " + statusText);
	}
}





function xhrResult(xhr) {
	
	this.xml = xhr.responseXML;
	this.text = xhr.responseText
	this.status = xhr.status;
	this.statusText = xhr.statusText;
	this.headerStr = xhr.getAllResponseHeaders();
}






function xhrProcessor() {
	
	this.queue = new Array('null');
	this.current = 1;
	this.busy = false;
	this.xhr = null;
	var self = this;
	
/*	this.enqueue = function (query) {
		var pos = this.queue.length;
		this.queue[pos] = query;
		//setTimeout("10", this.process);
		return pos;
	}
	
	this.dequeue = function (i) {
		var query = this.queue[i];
		this.queue[i] = null;
		return query;
	}
*/	
	this.process = function (query) {
		//if (this.busy || this.queue.length <= this.current) return false;
		this.busy = this.current;
		this.xhr = new XMLHttpRequest();
//		var query = this.queue[this.current];
		
		for (var i in query.headers) this.xhr.setRequestHeader(query.headers[i]['name'], query.headers[i]['value']);
		
		var data = this.linearize(query.posts);
		var cook = this.linearize(query.cookies);
		if (cook) this.xhr.setRequestHeader('Cookies', cook);
		
		// processing...
		
		this.xhr.onreadystatechange = function() {
			if ( this.readyState == 4 ) {
				self.busy = false;
				var xhrs = this;
				var result = new xhrResult( xhrs );
				if (query.callback) return query.callback(result);
				return true;
			}
		}
		
		
		
		
		this.xhr.open(query.method, query.url, query.async);
		this.xhr.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
		this.xhr.send(data);
	
	
		this.current++;
		
		return true;
	}
	
	this.abort = function () {
		this.xhr.abort();
		//return this.queue[this.current - 1];
	}
	
	this.linearize = function (arr) {
		var str = '';
		for (var i in arr) {
			str += arr[i]['name'] + "=" + arr[i]['value'];
		}
		return str;
	}
	
}


function xhrMonitor() {
	
	
}