var zbrowser = {　　//设置浏览器cookie，exdays是cookie有效时间
    setCookie: function (c_name, value, exdays) {
        var exdate = new Date();
        exdate.setDate(exdate.getDate() + exdays);
        var c_value = value + ((exdays == null) ? "" : "; expires=" + exdate.toUTCString());
        document.cookie = c_name + "=" + c_value;
    },　　//获取浏览器cookie
    getCookie: function (c_name) {
        var c_value = document.cookie;
        var c_start = c_value.indexOf(" " + c_name + "=");
        if (c_start == -1) {
            c_start = c_value.indexOf(c_name + "=");
        }
        if (c_start == -1) {
            c_value = null;
        } else {
            c_start = c_value.indexOf("=", c_start) + 1;
            var c_end = c_value.indexOf(";", c_start);
            if (c_end == -1) {
                c_end = c_value.length;
            }
            c_value = c_value.substring(c_start, c_end);
        }
        return c_value;
    },　　//获取页面参数：http://www.xxx.com?va=1;---> getPageVar("va")=1
    getPageVar: function (sVar) {
        return location.search.replace(new RegExp("^(?:.*[&\\?]" + sVar.replace(/[\.\+\*]/g, "\\$&") + "(?:\\=([^&]*))?)?.*$", "i"), "$1");
    }
};