Date.prototype.Format = function (fmt) {

    var that = this;

    var postfix = false;

    var o = {

        "M+": this.getMonth() + 1, //month

        "d+": this.getDate(), //day

        "h+": function () {

            return postfix ? (that.getHours() % 12 == 0 ? 12 : that.getHours() % 12) : that.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(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));

    for (var k in o) {

        if (new RegExp("(" + k + ")").test(fmt)) {

            if (RegExp.$1.length == 1 && RegExp.$1 == "h") postfix = true;

            var val = typeof (o[k]) == "function" ? o[k].apply(this) : o[k];

            fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (val) : (("00" + val).substr(("" + val).length)));

        }

    }

    return fmt + (postfix ? ((this.getHours() < 12) ? " AM" : " PM") : "");

}

// following are testing code

var Ld = "26-09-2014";

var Lt = "13:15:23";

var arrDateParts = Ld.split("-");

if (arrDateParts.length == 3) {

    var dayNum = arrDateParts[0];

    var monthNum = arrDateParts[1];

    var yearNum = arrDateParts[2];

    var D = new Date(monthNum.concat("/", dayNum, "/", yearNum, ' ', Lt));

    console.info(D.Format("M/dd/yyyy h:mm:ss"));

}