var http_request = false;
function make_request(url,func,method,data){
	if(window.XMLHttpRequest){
		http_request = new XMLHttpRequest();
		if(http_request.overrideMimeType){
			http_request.overrideMimeType("text/xml");
		}
	}else if(window.ActiveXObject){
		try{
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		}catch(e){
			try{
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			}catch(e){}
		}
	}
	if(!http_request){
		alert("Error javascript");
		return false;
	}
	http_request.onreadystatechange = func;
	http_request.open(method, url, true);
	http_request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
	http_request.send(data);
	return true;
}