Date.prototype.ToString = function (format) {
    var o = {
        "M+": this.getMonth() + 1, //month
        "d+": this.getDate(), //day
        "h+": this.getHours(), //hour
        "m+": this.getMinutes(), //minute
        "s+": this.getSeconds(), //second
        "q+": Math.floor((this.getMonth() + 3) / 3), //quarter
        "S": this.getMilliseconds() //millisecond
    }
    if (/(y+)/.test(format)) format = format.replace(RegExp.$1,
     (this.getFullYear() + "").substr(4 - RegExp.$1.length));
    for (var k in o) if (new RegExp("(" + k + ")").test(format))
        format = format.replace(RegExp.$1,
        RegExp.$1.length == 1 ? o[k] :
        ("00" + o[k]).substr(("" + o[k]).length));
    return format;
}
Date.prototype.AddMonths = function (m) {
    var temp = new Date(this.getFullYear(), this.getMonth(), this.getDate(), this.getHours(), this.getMinutes(), this.getSeconds(), this.getMilliseconds());
    temp.setMonth(temp.getMonth() + m);
    return temp;
}
Date.prototype.AddDays = function (d) {
    var temp = new Date(this.getFullYear(), this.getMonth(), this.getDate(), this.getHours(), this.getMinutes(), this.getSeconds(), this.getMilliseconds());
    temp.setDate(temp.getDate() + d);
    return temp;
}
Date.prototype.AddHours = function (h) {
    var temp = new Date(this.getFullYear(), this.getMonth(), this.getDate(), this.getHours(), this.getMinutes(), this.getSeconds(), this.getMilliseconds());
    temp.setHours(temp.getHours() + h);
    return temp;
}
Date.prototype.AddMinutes = function (m) {
    var temp = new Date(this.getFullYear(), this.getMonth(), this.getDate(), this.getHours(), this.getMinutes(), this.getSeconds(), this.getMilliseconds());
    temp.setMinutes(temp.getMinutes() + m);
    return temp;
}
String.prototype.ToDate = function () {
    var splitChar = '-';
    if (this.indexOf('-') > 0) {
        splitChar = '-';
    }
    else if (this.indexOf('/') > 0) {
        splitChar = '/';
    }
    var tempStrs = this.split(" ");
    var dateStrs = tempStrs[0].split(splitChar);
    var year = parseInt(dateStrs[0], 10);
    var month = parseInt(dateStrs[1], 10) - 1;
    var day = parseInt(dateStrs[2], 10);
    var hour = 0;
    var minute = 0;
    var second = 0;
    if ($.trim(tempStrs[1]) != "") {
        var timeStrs = tempStrs[1].split(":");
        var hour = parseInt(timeStrs[0], 10);
        var minute = parseInt(timeStrs[1], 10) - 1;
        var second = parseInt(timeStrs[2], 10);
    }
    return new Date(year, month, day, hour, minute, second);
}