/***************************
这里是处理new date()的函数
***************************/
Date.prototype.DateAdd = function(interval, number, date) {
    if (typeof (date) != "object") {
        date = date.split(/-|\//);
        date = new Date(date[0], parseInt(date[1]) - 1, date[2])
    }
    switch (interval.toLowerCase()) {
        case "y": return new Date(date.setFullYear(date.getFullYear() + number));
        case "m": return new Date(date.setMonth(date.getMonth() + number));
        case "d": return new Date(date.setDate(date.getDate() + number));
        case "w": return new Date(date.setDate(date.getDate() + 7 * number));
        case "h": return new Date(date.setHours(date.getHours() + number));
        case "n": return new Date(date.setMinutes(date.getMinutes() + number));
        case "s": return new Date(date.setSeconds(date.getSeconds() + number));
        case "l": return new Date(date.setMilliseconds(date.getMilliseconds() + number));
    }
}
Date.prototype.DateDiff = function(interval, date1, date2) {
    if (typeof (date1) != "object") {
        date1 = date1.split(/-|\//);
        date1 = new Date(date1[0], parseInt(date1[1]) - 1, date1[2])
    }
    if (typeof (date2) != "object") {
        date2 = date2.split(/-|\//);
        date2 = new Date(date2[0], parseInt(date2[1]) - 1, date2[2])
    }
    var long = date2.getTime() - date1.getTime(); //相差毫秒
    switch (interval.toLowerCase()) {
        case "y": return parseInt(date2.getFullYear() - date1.getFullYear());
        case "m": return parseInt((date2.getFullYear() - date1.getFullYear()) * 12 + (date2.getMonth() - date1.getMonth()));
        case "d": return parseInt(long / 1000 / 60 / 60 / 24);
        case "w": return parseInt(long / 1000 / 60 / 60 / 24 / 7);
        case "h": return parseInt(long / 1000 / 60 / 60);
        case "n": return parseInt(long / 1000 / 60);
        case "s": return parseInt(long / 1000);
        case "l": return parseInt(long);
    }
}
Date.prototype.Format = function(fmt) { //author: meizz
    var o = {
        "M+": this.getMonth() + 1,                 //月份
        "d+": this.getDate(),                    //日
        "h+": this.getHours(),                   //小时
        "m+": this.getMinutes(),                 //分
        "s+": this.getSeconds(),                 //秒
        "q+": Math.floor((this.getMonth() + 3) / 3), //季度
        "S": this.getMilliseconds()             //毫秒
    };
    if (/(y+)/.test(fmt))
        fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
    for (var k in o)
        if (new RegExp("(" + k + ")").test(fmt))
        fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
    return fmt;
}