var resObject;
if(navigator.appName.search("Microsoft") > -1) {
	resObject = new ActiveXObject("MSXML2.XMLHTTP");
} else {
	resObject = new XMLHttpRequest();
}

function sndReq() {
	for(i=1; i<=6; i++) {
		if(document.choice.variant[i-1].checked) {
			resObject.open('get', 'variant.php?check='+i, true);
			resObject.onreadystatechange = handleResponse;
			resObject.send(null);
			break;
		}
	}
}

function handleResponse() {
	if(resObject.readyState == 4) {
		document.getElementById("index_variant").innerHTML = resObject.responseText;
	}
}