function viewPollWindow(PollID) {
    pollWindow = window.open('/poll_result.aspx?pollid=' + PollID, 'AQContextHelp', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,width=500,height=350').focus();
}
function openPollWindow(PollID) {
    var answer = "";
    var frmForm = document.aspnetForm;
    for (i = 0; i < frmForm.elements.length; i++) {
        e = frmForm.elements[i];
        if (e.name == "Poll" + PollID && e.checked == true) {
            answer = answer + "&answer=" + e.value;
        }
    }

    if (answer == "") {
        alert("Hãy chọn một câu trả lời");
    }
    else {
        pollWindow = window.open('/vote_poll.aspx?pid=' + PollID + answer, 'AQContextHelp', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,width=500,height=350').focus();
    }
}
function GetXmlHttpObject() {
    var xmlHttp = null;
    try {
        // Firefox, Opera 8.0+, Safari
        xmlHttp = new XMLHttpRequest();
    }
    catch (e) {
        // Internet Explorer
        try {
            xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
        }
        catch (e) {
            xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
        }
    }
    return xmlHttp;
}