var http_request = false;

     

    function createHttpRequest() {
    var httpRequest;
    var browser = navigator.appName;
    if (browser == "Microsoft Internet Explorer") {
    httpRequest = new ActiveXObject("Microsoft.XMLHTTP");		    
			} else {
    httpRequest = new XMLHttpRequest();
    }
    return httpRequest;
    }





    function sendRequest(file, _resultId, getRequest) {
    resultId = _resultId;
    document.getElementById(resultId).innerHTML = 'Подождите, идет загрузка...';
    httpRequest.open('get', file);
    httpRequest.onreadystatechange = getRequest;
    httpRequest.send(null);
    } 
    
    function sendpostRequest(file, _resultId, getRequestProc, post_term) {
    httpRequest.abort();
    resultId = _resultId;
    document.getElementById(resultId).innerHTML = 'Подождите, идет загрузка....';
    httpRequest.open('post', file);
    httpRequest.onreadystatechange = getRequestProc;
    httpRequest.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
    httpRequest.setRequestHeader("Content-length", post_term.length);
    httpRequest.send(post_term);
    } 
    
    function sendpostRequestOtv(file, _resultId, getRequestProc, post_term) {
//  httpRequest.abort();
    resultId = _resultId;
    document.getElementById(resultId).innerHTML = 'Подождите, идет загрузка....';
    httpRequest.open('post', file);
    httpRequest.onreadystatechange = getRequestProc;
    httpRequest.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
    httpRequest.setRequestHeader("Content-length", post_term.length);
    httpRequest.send(post_term);
    } 
    

    function getRequest() {
    if (httpRequest.readyState == 4) {
    document.getElementById(resultId).innerHTML = httpRequest.responseText;
    }
    }
    
//    function karta(nomer){
//    window.open('karta.php?otvet=' + nomer,'karta','width=550,height=550,left=150,top=20,screenX=0,screenY=0,resizable=1,scrollbar=1,status=0');
//    }
    
    function karta(nomer, termin_kr){
    window.open('karta.php?otvet=' + nomer + '&termin_kr=' + termin_kr,'karta','width=550,height=550,left=150,top=20,screenX=0,screenY=0,resizable=1,scrollbar=1,status=0 style="overflow: scroll";');
    }

    function kar_stat(nomer, termin_kr){
    window.open('karta_stat.php?otvet=' + nomer + '&termin_kr=' + termin_kr,'karta','width=450,height=450,left=150,top=20,screenX=0,screenY=0,resizable=1,scrollbar=1,status=0 style="overflow: scroll";');
    }
    

var httpRequest = createHttpRequest();

var resultId = '';