var LSV = function() {
    return {
        UI: {},
        Validation: {},
        Utils: {}
    }
} ();

LSV.Utils = function() {
    return {
       strip_chars: function(s, bag) {
	        var i;
            var returnString = "";
            for (i = 0; i < s.length; i++){   
                var c = s.charAt(i);
                if (bag.indexOf(c) == -1) returnString += c;
            }
            return returnString;
        },
        gup: function(name) {
            name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
            var regexS = "[\\?&]" + name + "=([^&#]*)";
            var regex = new RegExp(regexS);
            var results = regex.exec(window.location.href);
            if (results == null)
                return "";
            else
                return results[1];
        }
    }
} ();

LSV.UI = function() {
    var _current_dialog;
    return {
        close_dialog: function() {
            _current_dialog.dialog("close");
        },
        destroy_dialog: function() {
            _current_dialog.dialog("destroy").remove();
        },
        get_dialog: function(title, body) {
            _current_dialog = $("<div></div>").attr("title", title).append(body);
            return _current_dialog;
        }
    }
} ();

LSV.Validation = function() {
    var _date_separator = "/";
    var _minYear = 1900;
    var _maxYear = 2010;

    function _days_in_february(year) {
        return (((year % 4 == 0) && ((!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28);
    }
    function _days_array(n) {
        for (var i = 1; i <= n; i++) {
            this[i] = 31
            if (i == 4 || i == 6 || i == 9 || i == 11) { this[i] = 30 }
            if (i == 2) { this[i] = 29 }
        }
        return this
    }

    return {
        set_date_separator: function(ch) {
            _date_separator = ch;
        },
        is_email: function(email) {
            return /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(email);
        },
        is_integer: function(s) {
            var i;
            for (i = 0; i < s.length; i++) {
                var c = s.charAt(i);
                if (((c < "0") || (c > "9"))) return false;
            }
            return true;
        },
        only_date: function(evt) {
            var charCode = (evt.which) ? evt.which : event.keyCode
            var allowed = [8, 9, 16, 17, 35, 36, 37, 39, 46, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 111]
            allowed.push(_date_separator.charCodeAt(0));
            if ($.inArray(charCode, allowed) > -1)
                return true;
            if (charCode < 48 || charCode > 57)
                return false;
        },
        only_int: function(evt) {
            var charCode = (evt.which) ? evt.which : event.keyCode
            var allowed = [8, 9, 17, 35, 36, 37, 39, 46, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106]
            if ($.inArray(charCode, allowed) > -1)
                return true;
            if (charCode < 48 || charCode > 57)
                return false;
        },
        max_length: function(e, length) {
            $(e).keyup(function() {
                if ($(e).val().length > length)
                    $(e).val($(e).val().substr(0, length));
            });
        },
        is_date: function(dtStr) {
            var daysInMonth = _days_array(12)
            var pos1 = dtStr.indexOf(_date_separator)
            var pos2 = dtStr.indexOf(_date_separator, pos1 + 1)
            var strDay = dtStr.substring(0, pos1)
            var strMonth = dtStr.substring(pos1 + 1, pos2)
            var strYear = dtStr.substring(pos2 + 1)
            strYr = strYear
            if (strDay.charAt(0) == "0" && strDay.length > 1) strDay = strDay.substring(1)
            if (strMonth.charAt(0) == "0" && strMonth.length > 1) strMonth = strMonth.substring(1)
            for (var i = 1; i <= 3; i++) {
                if (strYr.charAt(0) == "0" && strYr.length > 1) strYr = strYr.substring(1)
            }
            month = parseInt(strMonth)
            day = parseInt(strDay)
            year = parseInt(strYr)
            if (pos1 == -1 || pos2 == -1) {
                return false
            }
            if (strMonth.length < 1 || month < 1 || month > 12) {
                return false
            }
            if (strDay.length < 1 || day < 1 || day > 31 || (month == 2 && day > _days_in_february(year)) || day > daysInMonth[month]) {
                alert("Please enter a valid day")
                return false
            }
            if (strYear.length != 4 || year == 0 || year < _minYear || year > _maxYear) {
                return false
            }
            if (dtStr.indexOf(_date_separator, pos2 + 1) != -1 || LSV.Validation.is_integer(LSV.Utils.strip_chars(dtStr, _date_separator)) == false) {
                return false
            }
            return true
        }
    }
} ();