function request(paras) {
    var url = location.href;
    var paraString = url.substring(url.indexOf("?") + 1, url.length).split("&");
    var paraObj = {};
    for (i = 0; j = paraString[i]; i++) {
        paraObj[decodeURI(j.substring(0, j.indexOf("=")).toLowerCase())] = j.substring(j.indexOf("=") + 1, j.length);
    }
    var returnValue = paraObj[decodeURI(paras.toLowerCase())];
    if (typeof (returnValue) == "undefined") {
        return "";
    }
    else {
        return decodeURI(returnValue);
    }
}

String.prototype.replaceAll = function (s1, s2) {
    return this.replace(new RegExp(s1, "gm"), s2);
}