$(document).ready(function() {

    var t = $("#nava tr td table");
    var a = $("#nava tr td table tr td a");

    var link = window.location.href.match(/.+\/([^?]*)/)[1].toLowerCase();
    var i = -1;

    if (link == "CardPay.aspx".toLowerCase() || link == "CardPayConfirm.aspx".toLowerCase()) {
        i = 0;
    }
    else if (link == "BankPay.aspx".toLowerCase() || link == "BankPayConfirm.aspx".toLowerCase() || link == "BankPayMerchant.aspx".toLowerCase() || link == "BankPayMessage.aspx".toLowerCase()) {
        i = 1;
    }
    else if (link == "Pay591Fu.aspx".toLowerCase()||link == "Pay591FuConfirm.aspx".toLowerCase()||link == "Pay591FuHelp.aspx".toLowerCase()||link == "Pay591FuMerchant.aspx".toLowerCase()||link == "Pay591Fu.aspx".toLowerCase()||link == "Pay591FuMessage.aspx".toLowerCase()) {
        i = 2;
    }
    else if (link == "PayHelp.aspx".toLowerCase()) {
        i = 3;
    }

    if (i != -1) {
        t.eq(i).attr("background", "http://www.gyyx.cn/stage_images/ptnew.jpg");
        a.eq(i).addClass("bai14");
    }
})