function DetectEnterPressed(e) {
    var charCode;
    if (e && e.which) {
        e = e;
        charCode = e.which;
    }
    else {
        e = event;
        charCode = e.keyCode;
    }
    if (charCode == 13) return true;
    else return false;
}
function OpenCouponPage(url) {
    window.open(url, "", "width=400,height=300", "");
}