function make_ajax_vote(item, vote){
   param = "item=" + item + "&vote=" + vote; 
    document.getElementById("button_vote_" + item).innerHTML  =  "<img src='./img/wait.gif'>";  
    if (window.XMLHttpRequest) { // Mozilla, Safari, ...
            http_request = new XMLHttpRequest();
            } else if (window.ActiveXObject) { // IE
            http_request = new ActiveXObject("Microsoft.XMLHTTP");
        }
        
        http_request.onreadystatechange = function(){show_auth(item);};
        
        
        http_request.open('POST', './ajax/vote.php', true);
        
        
        http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
          http_request.setRequestHeader("Content-length", param.length);
         http_request.setRequestHeader("Connection", "close");
         http_request.send(param); 
}


function show_auth(item){
    if (http_request.readyState == 4) {
            // все в порядке, ответ получен
            document.getElementById("button_vote_" + item).innerHTML  =  http_request.responseText;
            
                } else {
                
                

        // все еще не готово
            }
}