var input = document.getElementById('input');
var scriptWorks = false;

input.onclick = function() {
	
	if (scriptWorks == true) {
		alert('Подождите, проверяются введённые данные.');
		return;
	}
	
	var fam = document.getElementById('fam').value;
	var numberPasport = document.getElementById('numberPasport').value;
	var teacher = document.getElementById('teacher').checked;
	if (teacher) { teacher = 1; } else { teacher = 0; }
	var params = 'action=login&fam='+encodeURIComponent(fam)+'&numberPasport='+encodeURIComponent(numberPasport)+'&teacher='+teacher;
	
	var request = getXmlHttp();				
	request.open('POST', '.', true);
	request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	
	scriptWorks = true;
	request.onreadystatechange = function() {
		
		if (request.readyState == 4 && request.status == 200) {
			var response = request.responseText;						
			if (response == 1) {
				var path = '';
				if (path) {
					location.href = 'http://' + path;
				} else location.href = 'http://up2.zipsupc.ru/@electronicCabinet/';
				scriptWorks = false;
			} else {
				alert('Вы ввели неправильно фамилию или номер паспорта!');
				scriptWorks = false;
			}
		}
	};
	
	request.send(params);				
}

function getXmlHttp(){
	var xmlhttp;
	try {
		xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	} catch (e) {
		try {
			xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
		} catch (E) {
			xmlhttp = false;
		}
	}
	if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
		xmlhttp = new XMLHttpRequest();
	}
	return xmlhttp;
}