var http = createRequestObject(); 

function createRequestObject(){
    var request_;
    var browser = navigator.appName;   
      
    if(browser == "Microsoft Internet Explorer" || typeof ActiveXObject != "undefined" ){
        request_ = new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        request_ = new XMLHttpRequest();
    }
    return request_;
}


function getInfo(c, how){
	if (how == 0){
	    http.open('get', 'get_cities.php?get_country_id='+c);
	}else if (how == 1) {
	    http.open('get', 'get_cities.php?get_dist_country_id='+c);
	}else if (how == 2) {
	    http.open('get', 'show_dist.php?city_id='+c);
	}

    http.onreadystatechange = handleInfo;
    http.send(null);
}

function handleInfo(){           
    if(http.readyState == 1){
        document.getElementById('city_div').innerHTML = 'جاري التحميل...';
    }         
    if(http.readyState == 4){
        if(http.status == 200 ){
            var response = http.responseText;
            document.getElementById('city_div').innerHTML = response; 
        }        
    }
}