AJAX = function(){



	var request = false;

	var responseStr="",requestFn,url="";

	

	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("Error initializing XMLHttpRequest!");

		

	this.get=function(){

		//alert("....");

		if(checkFn()){

			var d = new Date(); 

			var add="t="+d.getTime()

			var p=url.indexOf("?");

			if (p == -1)

				add="?"+add;

			else

				add="&"+add;

			request.open("GET",url+add, true);

			responseStr="";

			request.onreadystatechange = updateFn;

			

			request.send(null);

		}

	}

	

	function updateFn(){

		if (request.readyState == 4) {

			if (request.status == 200){

				//alert("....2");

				responseStr+=request.responseText; 

				if (responseStr.indexOf("\r\n")!=-1){

				//	alert(".....3");

					requestFn();

				}

				else{

					if(request.responseText!="") alert(request.responseText);

				}

			}

		}

	}

	

	this.getResponse=function(){

		return responseStr;

	}

	

	this.setFn=function(Fn){

		if(typeof(Fn)!="function"){

			alert("it's not function");

			return false;

		}else{

			requestFn=Fn;

			return true;

		}

	}

	this.setURL=function(str){

		url=str;

	}

	

	

	function checkFn(){

		if(typeof(requestFn)!="function"){

			alert("it's not function");

			return false;

		}

		return true;

	}



}