function commentstat(grade) {
    var returnstr;
    switch (parseInt(grade)) {
        case 1:
            returnstr = "★";
            break;
        case 2:
            returnstr = "★★";
            break;
        case 3:
            returnstr = "★★★";
            break;
        case 4:
            returnstr = "★★★★";
            break;
        case 5:
            returnstr = "★★★★★";
            break;
    }
    return returnstr;
}

function getQueryString(key) {
    var value = "";
    var sURL = window.document.URL;

    if (sURL.indexOf("?") > 0) {
        var arrayParams = sURL.split("?");
        var arrayURLParams = arrayParams[1].split("&");

        for (var i = 0; i < arrayURLParams.length; i++) {
            var sParam = arrayURLParams[i].split("=");

            if ((sParam[0] == key) && (sParam[1] != "")) {
                value = sParam[1];
                break;
            }
        }
    }
    return value;
}

function checkuseravoid(str) {
    var inj_str = "‘|and|exec|insert|select|delete|update|count|*|%|chr|mid|master|truncate|char|declare|;|or|-|+|,";
    var sarray = new Array();

    sarray = inj_str.split('|');
    for (var i = 0; i < inj_stra.length; i++) {
        if (str.indexOf(inj_stra) >= 0)
            return true;
    }
    return false;
}

function GetRadioValue(RadioName) {
    var obj;
    obj = document.getElementsByName(RadioName);
    if (obj != null) {
        var i;
        for (i = 0; i < obj.length; i++) {
            if (obj[i].checked) {
                return obj[i].value;
            }
        }
    }
    return null;
}

function getCookie(name) {
    if (name == "username") {
        if (result != null && result.code == "1") {
            return result.uname;
        }
        else
            return "";
     }
    else {
        var search;
        search = name + "="
        offset = document.cookie.indexOf(search)
        if (offset != -1) {
            offset += search.length;
            end = document.cookie.indexOf(";", offset);
            if (end == -1)
                end = document.cookie.length;
            var c = document.cookie.substring(offset, end);
            var arrCookie = c.split("&");
            return rep(unescape(arrCookie[0]));
        }
        else
            return "";
    }
}

function rep(s) {
    var a = s.split("+");
    if (a.length > 0)
        return a[0];
    else
        return s;
}

function popwin(caller, callee) {
    var urlview = "http://vs.90jy.com/srv.aspx?caller=" + caller + "&callee=" + callee;
    randnum = Math.random();
    var _left = (screen.width - 480) / 2;
    var _top = (screen.height - 514) / 2;
    //452*480
    var win = window.open(urlview, "在线视频", 'toolbar=no,scrollbars=yes,resizable=no,top=' + _top + ',left=' + _left + ', width=480,height=514');
}