/*
* jQuery timepicker addon
* By: Trent Richardson [http://trentrichardson.com]
* Version 0.9.3
* Last Modified: 02/05/2011
* 
* Copyright 2010 Trent Richardson
* Dual licensed under the MIT and GPL licenses.
* http://trentrichardson.com/Impromptu/GPL-LICENSE.txt
* http://trentrichardson.com/Impromptu/MIT-LICENSE.txt
* 
* HERES THE CSS:
* .ui-timepicker-div .ui-widget-header{ margin-bottom: 8px; }
* .ui-timepicker-div dl{ text-align: left; }
* .ui-timepicker-div dl dt{ height: 25px; }
* .ui-timepicker-div dl dd{ margin: -25px 0 10px 65px; }
* .ui-timepicker-div td { font-size: 90%; }
*/

(function ($) {

  $.extend($.ui, { timepicker: { version: "0.9.3"} });

  /* Time picker manager.
  Use the singleton instance of this class, $.timepicker, to interact with the time picker.
  Settings for (groups of) time pickers are maintained in an instance object,
  allowing multiple different settings on the same page. */

  function Timepicker() {
    this.regional = []; // Available regional settings, indexed by language code
    this.regional[''] = { // Default regional settings
      currentText: 'Adesso',
      closeText: 'Fatto',
      ampm: false,
      timeFormat: 'hh:mm tt',
      timeOnlyTitle: 'Scelga l\'ora',
      timeText: 'Ora',
      hourText: 'Ore',
      minuteText: 'Minuti',
      secondText: 'Second',
      timeOnly: true
    };
    this._defaults = { // Global defaults for all the datetime picker instances
      showButtonPanel: true,
      timeOnly: false,
      showHour: true,
      showMinute: true,
      showSecond: false,
      showTime: true,
      stepHour: 0.05,
      stepMinute: 0.05,
      stepSecond: 0.05,
      hour: 0,
      minute: 0,
      second: 0,
      hourMin: 0,
      minuteMin: 0,
      secondMin: 0,
      hourMax: 23,
      minuteMax: 59,
      secondMax: 59,
      minDateTime: null,
      maxDateTime: null,
      hourGrid: 0,
      minuteGrid: 0,
      secondGrid: 0,
      alwaysSetTime: true,
      separator: ' ',
      altFieldTimeOnly: true,
      showTimepicker: true
    };
    $.extend(this._defaults, this.regional['']);
  }

  $.extend(Timepicker.prototype, {
    $input: null,
    $altInput: null,
    $timeObj: null,
    inst: null,
    hour_slider: null,
    minute_slider: null,
    second_slider: null,
    hour: 0,
    minute: 0,
    second: 0,
    hourMinOriginal: null,
    minuteMinOriginal: null,
    secondMinOriginal: null,
    hourMaxOriginal: null,
    minuteMaxOriginal: null,
    secondMaxOriginal: null,
    ampm: '',
    formattedDate: '',
    formattedTime: '',
    formattedDateTime: '',

    /* Override the default settings for all instances of the time picker.
    @param  settings  object - the new settings to use as defaults (anonymous object)
    @return the manager object */
    setDefaults: function (settings) {
      extendRemove(this._defaults, settings || {});
      return this;
    },

    //########################################################################
    // Create a new Timepicker instance
    //########################################################################
    _newInst: function ($input, o) {
      var tp_inst = new Timepicker(),
			inlineSettings = {};

      tp_inst.hour = tp_inst._defaults.hour;
      tp_inst.minute = tp_inst._defaults.minute;
      tp_inst.second = tp_inst._defaults.second;
      tp_inst.ampm = '';
      tp_inst.$input = $input;


      for (var attrName in this._defaults) {
        var attrValue = $input.attr('time:' + attrName);
        if (attrValue) {
          try {
            inlineSettings[attrName] = eval(attrValue);
          } catch (err) {
            inlineSettings[attrName] = attrValue;
          }
        }
      }
      tp_inst._defaults = $.extend({}, this._defaults, inlineSettings, o, {
        beforeShow: function (input, dp_inst) {
          if ($.isFunction(o.beforeShow))
            o.beforeShow(input, dp_inst, tp_inst);
        },
        onChangeMonthYear: function (year, month, dp_inst) {
          // Update the time as well : this prevents the time from disappearing from the $input field.
          tp_inst._updateDateTime(dp_inst);
          if ($.isFunction(o.onChangeMonthYear))
            o.onChangeMonthYear(year, month, dp_inst, tp_inst);
        },
        onClose: function (dateText, dp_inst) {
          if (tp_inst.timeDefined === true && $input.val() != '')
            tp_inst._updateDateTime(dp_inst);
          if ($.isFunction(o.onClose))
            o.onClose(dateText, dp_inst, tp_inst);
        },
        timepicker: tp_inst // add timepicker as a property of datepicker: $.datepicker._get(dp_inst, 'timepicker');
      });

      if (o.altField)
        tp_inst.$altInput = $(o.altField)
				.css({ cursor: 'pointer' })
				.focus(function () { $input.trigger("focus"); });

      // datepicker needs minDate/maxDate, timepicker needs minDateTime/maxDateTime..
      if (tp_inst._defaults.minDate !== undefined && tp_inst._defaults.minDate instanceof Date)
        tp_inst._defaults.minDateTime = new Date(tp_inst._defaults.minDate.getTime());
      if (tp_inst._defaults.minDateTime !== undefined && tp_inst._defaults.minDateTime instanceof Date)
        tp_inst._defaults.minDate = new Date(tp_inst._defaults.minDateTime.getTime());
      if (tp_inst._defaults.maxDate !== undefined && tp_inst._defaults.maxDate instanceof Date)
        tp_inst._defaults.maxDateTime = new Date(tp_inst._defaults.maxDate.getTime());
      if (tp_inst._defaults.maxDateTime !== undefined && tp_inst._defaults.maxDateTime instanceof Date)
        tp_inst._defaults.maxDate = new Date(tp_inst._defaults.maxDateTime.getTime());

      return tp_inst;
    },

    //########################################################################
    // add our sliders to the calendar
    //########################################################################
    _addTimePicker: function (dp_inst) {
      var currDT = (this.$altInput && this._defaults.altFieldTimeOnly) ?
				this.$input.val() + ' ' + this.$altInput.val() :
				this.$input.val();

      this.timeDefined = this._parseTime(currDT);
      this._limitMinMaxDateTime(dp_inst, false);
      this._injectTimePicker();
    },

    //########################################################################
    // parse the time string from input value or _setTime
    //########################################################################
    _parseTime: function (timeString, withDate) {
      var regstr = this._defaults.timeFormat.toString()
				.replace(/h{1,2}/ig, '(\\d?\\d)')
				.replace(/m{1,2}/ig, '(\\d?\\d)')
				.replace(/s{1,2}/ig, '(\\d?\\d)')
				.replace(/t{1,2}/ig, '(am|pm|a|p)?')
				.replace(/\s/g, '\\s?') + '$',
			order = this._getFormatPositions(),
			treg;

      if (!this.inst) this.inst = $.datepicker._getInst(this.$input[0]);

      if (withDate || !this._defaults.timeOnly) {
        // the time should come after x number of characters and a space.
        // x = at least the length of text specified by the date format
        var dp_dateFormat = $.datepicker._get(this.inst, 'dateFormat');
        regstr = '.{' + dp_dateFormat.length + ',}' + this._defaults.separator + regstr;
      }

      treg = timeString.match(new RegExp(regstr, 'i'));

      if (treg) {
        if (order.t !== -1)
          this.ampm = ((treg[order.t] === undefined || treg[order.t].length === 0) ?
					'' :
					(treg[order.t].charAt(0).toUpperCase() == 'A') ? 'AM' : 'PM').toUpperCase();

        if (order.h !== -1) {
          if (this.ampm == 'AM' && treg[order.h] == '12')
            this.hour = 0; // 12am = 0 hour
          else if (this.ampm == 'PM' && treg[order.h] != '12')
            this.hour = (parseFloat(treg[order.h]) + 12).toFixed(0); // 12pm = 12 hour, any other pm = hour + 12
          else this.hour = Number(treg[order.h]);
        }

        if (order.m !== -1) this.minute = Number(treg[order.m]);
        if (order.s !== -1) this.second = Number(treg[order.s]);

        return true;

      }
      return false;
    },

    //########################################################################
    // figure out position of time elements.. cause js cant do named captures
    //########################################################################
    _getFormatPositions: function () {
      var finds = this._defaults.timeFormat.toLowerCase().match(/(h{1,2}|m{1,2}|s{1,2}|t{1,2})/g),
			orders = { h: -1, m: -1, s: -1, t: -1 };

      if (finds)
        for (var i = 0; i < finds.length; i++)
          if (orders[finds[i].toString().charAt(0)] == -1)
            orders[finds[i].toString().charAt(0)] = i + 1;

      return orders;
    },

    //########################################################################
    // generate and inject html for timepicker into ui datepicker
    //########################################################################
    _injectTimePicker: function () {
      var $dp = this.inst.dpDiv,
			o = this._defaults,
			tp_inst = this,
      // Added by Peter Medeiros:
      // - Figure out what the hour/minute/second max should be based on the step values.
      // - Example: if stepMinute is 15, then minMax is 45.
			hourMax = (o.hourMax - (o.hourMax % o.stepHour)).toFixed(0),
			minMax = (o.minuteMax - (o.minuteMax % o.stepMinute)).toFixed(0),
			secMax = (o.secondMax - (o.secondMax % o.stepSecond)).toFixed(0),
			dp_id = this.inst.id.toString().replace(/([^A-Za-z0-9_])/g, '');

      // Prevent displaying twice
      //if ($dp.find("div#ui-timepicker-div-"+ dp_id).length === 0) {
      if ($dp.find("div#ui-timepicker-div-" + dp_id).length === 0 && o.showTimepicker) {
        var noDisplay = ' style="display:none;"',
				html = '<div class="ui-timepicker-div" id="ui-timepicker-div-' + dp_id + '"><dl>' +
						'<dt class="ui_tpicker_time_label" id="ui_tpicker_time_label_' + dp_id + '"' +
						((o.showTime) ? '' : noDisplay) + '>' + o.timeText + '</dt>' +
						'<dd class="ui_tpicker_time" id="ui_tpicker_time_' + dp_id + '"' +
						((o.showTime) ? '' : noDisplay) + '></dd>' +
						'<dt class="ui_tpicker_hour_label" id="ui_tpicker_hour_label_' + dp_id + '"' +
						((o.showHour) ? '' : noDisplay) + '>' + o.hourText + '</dt>',
				hourGridSize = 0,
				minuteGridSize = 0,
				secondGridSize = 0,
				size;

        if (o.showHour && o.hourGrid > 0) {
          html += '<dd class="ui_tpicker_hour">' +
						'<div id="ui_tpicker_hour_' + dp_id + '"' + ((o.showHour) ? '' : noDisplay) + '></div>' +
						'<div style="padding-left: 1px"><table><tr>';

          for (var h = o.hourMin; h < hourMax; h += o.hourGrid) {
            hourGridSize++;
            var tmph = (o.ampm && h > 12) ? h - 12 : h;
            if (tmph < 10) tmph = '0' + tmph;
            if (o.ampm) {
              if (h == 0) tmph = 12 + 'a';
              else if (h < 12) tmph += 'a';
              else tmph += 'p';
            }
            html += '<td>' + tmph + '</td>';
          }

          html += '</tr></table></div>' +
						'</dd>';
        } else html += '<dd class="ui_tpicker_hour" id="ui_tpicker_hour_' + dp_id + '"' +
							((o.showHour) ? '' : noDisplay) + '></dd>';

        html += '<dt class="ui_tpicker_minute_label" id="ui_tpicker_minute_label_' + dp_id + '"' +
					((o.showMinute) ? '' : noDisplay) + '>' + o.minuteText + '</dt>';

        if (o.showMinute && o.minuteGrid > 0) {
          html += '<dd class="ui_tpicker_minute ui_tpicker_minute_' + o.minuteGrid + '">' +
						'<div id="ui_tpicker_minute_' + dp_id + '"' +
						((o.showMinute) ? '' : noDisplay) + '></div>' +
						'<div style="padding-left: 1px"><table><tr>';

          for (var m = o.minuteMin; m < minMax; m += o.minuteGrid) {
            minuteGridSize++;
            html += '<td>' + ((m < 10) ? '0' : '') + m + '</td>';
          }

          html += '</tr></table></div>' +
						'</dd>';
        } else html += '<dd class="ui_tpicker_minute" id="ui_tpicker_minute_' + dp_id + '"' +
							((o.showMinute) ? '' : noDisplay) + '></dd>';

        html += '<dt class="ui_tpicker_second_label" id="ui_tpicker_second_label_' + dp_id + '"' +
					((o.showSecond) ? '' : noDisplay) + '>' + o.secondText + '</dt>';

        if (o.showSecond && o.secondGrid > 0) {
          html += '<dd class="ui_tpicker_second ui_tpicker_second_' + o.secondGrid + '">' +
						'<div id="ui_tpicker_second_' + dp_id + '"' +
						((o.showSecond) ? '' : noDisplay) + '></div>' +
						'<div style="padding-left: 1px"><table><tr>';

          for (var s = o.secondMin; s < secMax; s += o.secondGrid) {
            secondGridSize++;
            html += '<td>' + ((s < 10) ? '0' : '') + s + '</td>';
          }

          html += '</tr></table></div>' +
						'</dd>';
        } else html += '<dd class="ui_tpicker_second" id="ui_tpicker_second_' + dp_id + '"' +
							((o.showSecond) ? '' : noDisplay) + '></dd>';

        html += '</dl></div>';
        $tp = $(html);

        // if we only want time picker...
        if (o.timeOnly === true) {
          $tp.prepend(
					'<div class="ui-widget-header ui-helper-clearfix ui-corner-all">' +
						'<div class="ui-datepicker-title">' + o.timeOnlyTitle + '</div>' +
					'</div>');
          $dp.find('.ui-datepicker-header, .ui-datepicker-calendar').hide();
        }

        this.hour_slider = $tp.find('#ui_tpicker_hour_' + dp_id).slider({
          orientation: "horizontal",
          value: this.hour,
          min: o.hourMin,
          max: hourMax,
          step: o.stepHour,
          slide: function (event, ui) {
            tp_inst.hour_slider.slider("option", "value", ui.value);
            tp_inst._onTimeChange();
          }
        });

        // Updated by Peter Medeiros:
        // - Pass in Event and UI instance into slide function
        this.minute_slider = $tp.find('#ui_tpicker_minute_' + dp_id).slider({
          orientation: "horizontal",
          value: this.minute,
          min: o.minuteMin,
          max: minMax,
          step: o.stepMinute,
          slide: function (event, ui) {
            // update the global minute slider instance value with the current slider value
            tp_inst.minute_slider.slider("option", "value", ui.value);
            tp_inst._onTimeChange();
          }
        });

        this.second_slider = $tp.find('#ui_tpicker_second_' + dp_id).slider({
          orientation: "horizontal",
          value: this.second,
          min: o.secondMin,
          max: secMax,
          step: o.stepSecond,
          slide: function (event, ui) {
            tp_inst.second_slider.slider("option", "value", ui.value);
            tp_inst._onTimeChange();
          }
        });

        // Add grid functionality
        if (o.showHour && o.hourGrid > 0) {
          size = 100 * hourGridSize * o.hourGrid / (hourMax - o.hourMin);

          $tp.find(".ui_tpicker_hour table").css({
            width: size + "%",
            marginLeft: (size / (-2 * hourGridSize)) + "%",
            borderCollapse: 'collapse'
          }).find("td").each(function (index) {
            $(this).click(function () {
              var h = $(this).html();
              if (o.ampm) {
                var ap = h.substring(2).toLowerCase(),
								aph = parseInt(h.substring(0, 2));
                if (ap == 'a') {
                  if (aph == 12) h = 0;
                  else h = aph;
                } else if (aph == 12) h = 12;
                else h = aph + 12;
              }
              tp_inst.hour_slider.slider("option", "value", h);
              tp_inst._onTimeChange();
            }).css({
              cursor: 'pointer',
              width: (100 / hourGridSize) + '%',
              textAlign: 'center',
              overflow: 'hidden'
            });
          });
        }

        if (o.showMinute && o.minuteGrid > 0) {
          size = 100 * minuteGridSize * o.minuteGrid / (minMax - o.minuteMin);
          $tp.find(".ui_tpicker_minute table").css({
            width: size + "%",
            marginLeft: (size / (-2 * minuteGridSize)) + "%",
            borderCollapse: 'collapse'
          }).find("td").each(function (index) {
            $(this).click(function () {
              tp_inst.minute_slider.slider("option", "value", $(this).html());
              tp_inst._onTimeChange();
            }).css({
              cursor: 'pointer',
              width: (100 / minuteGridSize) + '%',
              textAlign: 'center',
              overflow: 'hidden'
            });
          });
        }

        if (o.showSecond && o.secondGrid > 0) {
          $tp.find(".ui_tpicker_second table").css({
            width: size + "%",
            marginLeft: (size / (-2 * secondGridSize)) + "%",
            borderCollapse: 'collapse'
          }).find("td").each(function (index) {
            $(this).click(function () {
              tp_inst.second_slider.slider("option", "value", $(this).html());
              tp_inst._onTimeChange();
            }).css({
              cursor: 'pointer',
              width: (100 / secondGridSize) + '%',
              textAlign: 'center',
              overflow: 'hidden'
            });
          });
        }

        var $buttonPanel = $dp.find('.ui-datepicker-buttonpane');
        if ($buttonPanel.length) $buttonPanel.before($tp);
        else $dp.append($tp);

        this.$timeObj = $('#ui_tpicker_time_' + dp_id);

        if (this.inst !== null) {
          var timeDefined = this.timeDefined;
          this._onTimeChange();
          this.timeDefined = timeDefined;
        }

        //Emulate datepicker onSelect behavior. Call on slidestop.
        var onSelect = tp_inst._defaults['onSelect'];
        if (onSelect) {
          var inputEl = tp_inst.$input ? tp_inst.$input[0] : null;
          var onSelectHandler = function () {
            onSelect.apply(inputEl, [tp_inst.formattedDateTime, tp_inst]); // trigger custom callback*/
          }
          this.hour_slider.bind('slidestop', onSelectHandler);
          this.minute_slider.bind('slidestop', onSelectHandler);
          this.second_slider.bind('slidestop', onSelectHandler);
        }
      }
    },

    //########################################################################
    // This function tries to limit the ability to go outside the 
    // min/max date range
    //########################################################################
    _limitMinMaxDateTime: function (dp_inst, adjustSliders) {
      var o = this._defaults,
			dp_date = new Date(dp_inst.selectedYear, dp_inst.selectedMonth, dp_inst.selectedDay),
			tp_date = new Date(dp_inst.selectedYear, dp_inst.selectedMonth, dp_inst.selectedDay, this.hour, this.minute, this.second, 0);

      if (this._defaults.minDateTime !== null && dp_date) {
        var minDateTime = this._defaults.minDateTime,
				minDateTimeDate = new Date(minDateTime.getFullYear(), minDateTime.getMonth(), minDateTime.getDate(), 0, 0, 0, 0);

        if (this.hourMinOriginal === null || this.minuteMinOriginal === null || this.secondMinOriginal === null) {
          this.hourMinOriginal = o.hourMin;
          this.minuteMinOriginal = o.minuteMin;
          this.secondMinOriginal = o.secondMin;
        }

        if (minDateTimeDate.getTime() == dp_date.getTime()) {
          this._defaults.hourMin = minDateTime.getHours();
          this._defaults.minuteMin = minDateTime.getMinutes();
          this._defaults.secondMin = minDateTime.getSeconds();

          if (this.hour < this._defaults.hourMin) this.hour = this._defaults.hourMin;
          if (this.minute < this._defaults.minuteMin) this.minute = this._defaults.minuteMin;
          if (this.second < this._defaults.secondMin) this.second = this._defaults.secondMin;
        } else {
          this._defaults.hourMin = this.hourMinOriginal;
          this._defaults.minuteMin = this.minuteMinOriginal;
          this._defaults.secondMin = this.secondMinOriginal;
        }
      }

      if (this._defaults.maxDateTime !== null && dp_date) {
        var maxDateTime = this._defaults.maxDateTime,
				maxDateTimeDate = new Date(maxDateTime.getFullYear(), maxDateTime.getMonth(), maxDateTime.getDate(), 0, 0, 0, 0);

        if (this.hourMaxOriginal === null || this.minuteMaxOriginal === null || this.secondMaxOriginal === null) {
          this.hourMaxOriginal = o.hourMax;
          this.minuteMaxOriginal = o.minuteMax;
          this.secondMaxOriginal = o.secondMax;
        }

        if (maxDateTimeDate.getTime() == dp_date.getTime()) {
          this._defaults.hourMax = maxDateTime.getHours();
          this._defaults.minuteMax = maxDateTime.getMinutes();
          this._defaults.secondMax = maxDateTime.getSeconds();

          if (this.hour > this._defaults.hourMax) { this.hour = this._defaults.hourMax; }
          if (this.minute > this._defaults.minuteMax) this.minute = this._defaults.minuteMax;
          if (this.second > this._defaults.secondMax) this.second = this._defaults.secondMax;
        } else {
          this._defaults.hourMax = this.hourMaxOriginal;
          this._defaults.minuteMax = this.minuteMaxOriginal;
          this._defaults.secondMax = this.secondMaxOriginal;
        }
      }

      if (adjustSliders !== undefined && adjustSliders === true) {
        this.hour_slider.slider("option", { min: this._defaults.hourMin, max: this._defaults.hourMax }).slider('value', this.hour);
        this.minute_slider.slider("option", { min: this._defaults.minuteMin, max: this._defaults.minuteMax }).slider('value', this.minute);
        this.second_slider.slider("option", { min: this._defaults.secondMin, max: this._defaults.secondMax }).slider('value', this.second);
      }

    },

    //########################################################################
    // when a slider moves, set the internal time...
    // on time change is also called when the time is updated in the text field
    //########################################################################
    _onTimeChange: function () {
      var hour = (this.hour_slider) ? this.hour_slider.slider('value') : false,
			minute = (this.minute_slider) ? this.minute_slider.slider('value') : false,
			second = (this.second_slider) ? this.second_slider.slider('value') : false;

      if (hour !== false) hour = parseInt(hour, 10);
      if (minute !== false) minute = parseInt(minute, 10);
      if (second !== false) second = parseInt(second, 10);

      var ampm = (hour < 12) ? 'AM' : 'PM';

      // If the update was done in the input field, the input field should not be updated.
      // If the update was done using the sliders, update the input field.
      var hasChanged = (hour != this.hour || minute != this.minute || second != this.second || (this.ampm.length > 0 && this.ampm != ampm));

      if (hasChanged) {

        if (hour !== false) this.hour = hour;
        if (minute !== false) this.minute = minute;
        if (second !== false) this.second = second;
      }
      if (this._defaults.ampm) this.ampm = ampm;

      this._formatTime();
      if (this.$timeObj) this.$timeObj.text(this.formattedTime);
      this.timeDefined = true;
      if (hasChanged) this._updateDateTime();
    },

    //########################################################################
    // format the time all pretty...
    //########################################################################
    _formatTime: function (time, format, ampm) {
      if (ampm == undefined) ampm = this._defaults.ampm;
      time = time || { hour: this.hour, minute: this.minute, second: this.second, ampm: this.ampm };
      var tmptime = format || this._defaults.timeFormat.toString();

      if (ampm) {
        var hour12 = ((time.ampm == 'AM') ? (time.hour) : (time.hour % 12));
        hour12 = (Number(hour12) === 0) ? 12 : hour12;
        tmptime = tmptime.toString()
				.replace(/hh/g, ((hour12 < 10) ? '0' : '') + hour12)
				.replace(/h/g, hour12)
				.replace(/mm/g, ((time.minute < 10) ? '0' : '') + time.minute)
				.replace(/m/g, time.minute)
				.replace(/ss/g, ((time.second < 10) ? '0' : '') + time.second)
				.replace(/s/g, time.second)
				.replace(/TT/g, time.ampm.toUpperCase())
				.replace(/tt/g, time.ampm.toLowerCase())
				.replace(/T/g, time.ampm.charAt(0).toUpperCase())
				.replace(/t/g, time.ampm.charAt(0).toLowerCase());
      } else {
        tmptime = tmptime.toString()
				.replace(/hh/g, ((time.hour < 10) ? '0' : '') + time.hour)
				.replace(/h/g, time.hour)
				.replace(/mm/g, ((time.minute < 10) ? '0' : '') + time.minute)
				.replace(/m/g, time.minute)
				.replace(/ss/g, ((time.second < 10) ? '0' : '') + time.second)
				.replace(/s/g, time.second);
        tmptime = $.trim(tmptime.replace(/t/gi, ''));
      }

      if (arguments.length) return tmptime;
      else this.formattedTime = tmptime;
    },

    //########################################################################
    // update our input with the new date time..
    //########################################################################
    _updateDateTime: function (dp_inst) {
      dp_inst = this.inst || dp_inst,
			dt = new Date(dp_inst.selectedYear, dp_inst.selectedMonth, dp_inst.selectedDay),
			dateFmt = $.datepicker._get(dp_inst, 'dateFormat'),
			formatCfg = $.datepicker._getFormatConfig(dp_inst),
			timeAvailable = dt !== null && this.timeDefined;
      this.formattedDate = $.datepicker.formatDate(dateFmt, (dt === null ? new Date() : dt), formatCfg);
      var formattedDateTime = this.formattedDate;
      if (dp_inst.lastVal !== undefined && (dp_inst.lastVal.length > 0 && this.$input.val().length === 0))
        return;

      if (this._defaults.timeOnly === true) {
        formattedDateTime = this.formattedTime;
      } else if (this._defaults.timeOnly !== true && (this._defaults.alwaysSetTime || timeAvailable)) {
        formattedDateTime += this._defaults.separator + this.formattedTime;
      }

      this.formattedDateTime = formattedDateTime;

      if (!this._defaults.showTimepicker) {
        this.$input.val(this.formattedDate);
      } else if (this.$altInput && this._defaults.altFieldTimeOnly === true) {
        this.$altInput.val(this.formattedTime);
        this.$input.val(this.formattedDate);
      } else if (this.$altInput) {
        this.$altInput.val(formattedDateTime);
        this.$input.val(formattedDateTime);
      } else {
        this.$input.val(formattedDateTime);
      }

      this.$input.trigger("change");
    }

  });

  $.fn.extend({
    //########################################################################
    // shorthand just to use timepicker..
    //########################################################################
    timepicker: function (o) {
      o = o || {};
      var tmp_args = arguments;

      if (typeof o == 'object') tmp_args[0] = $.extend(o, { timeOnly: true });

      return $(this).each(function () {
        $.fn.datetimepicker.apply($(this), tmp_args);
      });
    },

    //########################################################################
    // extend timepicker to datepicker
    //########################################################################
    datetimepicker: function (o) {
      o = o || {};
      var $input = this,
			tmp_args = arguments;

      if (typeof (o) == 'string') {
        if (o == 'getDate')
          return $.fn.datepicker.apply($(this[0]), tmp_args);
        else
          return this.each(function () {
            var $t = $(this);
            $t.datepicker.apply($t, tmp_args);
          });
      }
      else
        return this.each(function () {
          var $t = $(this);
          $t.datepicker($.timepicker._newInst($t, o)._defaults);
        });
    }
  });

  //########################################################################
  // the bad hack :/ override datepicker so it doesnt close on select
  // inspired: http://stackoverflow.com/questions/1252512/jquery-datepicker-prevent-closing-picker-when-clicking-a-date/1762378#1762378
  //########################################################################
  $.datepicker._base_selectDate = $.datepicker._selectDate;
  $.datepicker._selectDate = function (id, dateStr) {
    var inst = this._getInst($(id)[0]),
		tp_inst = this._get(inst, 'timepicker');

    if (tp_inst) {
      tp_inst._limitMinMaxDateTime(inst, true);
      inst.inline = inst.stay_open = true;
      //This way the onSelect handler called from calendarpicker get the full dateTime
      this._base_selectDate(id, dateStr + tp_inst._defaults.separator + tp_inst.formattedTime);
      inst.inline = inst.stay_open = false;
      this._notifyChange(inst);
      this._updateDatepicker(inst);
    }
    else this._base_selectDate(id, dateStr);
  };

  //#############################################################################################
  // second bad hack :/ override datepicker so it triggers an event when changing the input field
  // and does not redraw the datepicker on every selectDate event
  //#############################################################################################
  $.datepicker._base_updateDatepicker = $.datepicker._updateDatepicker;
  $.datepicker._updateDatepicker = function (inst) {
    if (typeof (inst.stay_open) !== 'boolean' || inst.stay_open === false) {

      this._base_updateDatepicker(inst);

      // Reload the time control when changing something in the input text field.
      var tp_inst = this._get(inst, 'timepicker');
      if (tp_inst) tp_inst._addTimePicker(inst);
    }
  };

  //#######################################################################################
  // third bad hack :/ override datepicker so it allows spaces and colan in the input field
  //#######################################################################################
  $.datepicker._base_doKeyPress = $.datepicker._doKeyPress;
  $.datepicker._doKeyPress = function (event) {
    var inst = $.datepicker._getInst(event.target),
		tp_inst = $.datepicker._get(inst, 'timepicker');

    if (tp_inst) {
      if ($.datepicker._get(inst, 'constrainInput')) {
        var ampm = tp_inst._defaults.ampm,
				datetimeChars = tp_inst._defaults.timeFormat.toString()
								.replace(/[hms]/g, '')
								.replace(/TT/g, ampm ? 'APM' : '')
								.replace(/T/g, ampm ? 'AP' : '')
								.replace(/tt/g, ampm ? 'apm' : '')
								.replace(/t/g, ampm ? 'ap' : '') +
								" " +
								tp_inst._defaults.separator +
								$.datepicker._possibleChars($.datepicker._get(inst, 'dateFormat')),
				chr = String.fromCharCode(event.charCode === undefined ? event.keyCode : event.charCode);
        return event.ctrlKey || (chr < ' ' || !datetimeChars || datetimeChars.indexOf(chr) > -1);
      }
    }

    return $.datepicker._base_doKeyPress(event);
  };

  //#######################################################################################
  // Override key up event to sync manual input changes.
  //#######################################################################################
  $.datepicker._base_doKeyUp = $.datepicker._doKeyUp;
  $.datepicker._doKeyUp = function (event) {
    var inst = $.datepicker._getInst(event.target),
		tp_inst = $.datepicker._get(inst, 'timepicker');

    if (tp_inst) {
      if (tp_inst._defaults.timeOnly && (inst.input.val() != inst.lastVal)) {
        try {
          $.datepicker._updateDatepicker(inst);
        }
        catch (err) {
          $.datepicker.log(err);
        }
      }
    }

    return $.datepicker._base_doKeyUp(event);
  };

  //#######################################################################################
  // override "Today" button to also grab the time.
  //#######################################################################################
  $.datepicker._base_gotoToday = $.datepicker._gotoToday;
  $.datepicker._gotoToday = function (id) {
    this._base_gotoToday(id);
    this._setTime(this._getInst($(id)[0]), new Date());
  };

  //#######################################################################################
  // Disable & enable the Time in the datetimepicker
  //#######################################################################################
  $.datepicker._disableTimepickerDatepicker = function (target, date, withDate) {
    var inst = this._getInst(target),
	tp_inst = this._get(inst, 'timepicker');
    if (tp_inst) {
      tp_inst._defaults.showTimepicker = false;
      tp_inst._onTimeChange();
      tp_inst._updateDateTime(inst);
    }
  };

  $.datepicker._enableTimepickerDatepicker = function (target, date, withDate) {
    var inst = this._getInst(target),
	tp_inst = this._get(inst, 'timepicker');
    if (tp_inst) {
      tp_inst._defaults.showTimepicker = true;
      tp_inst._onTimeChange();
      tp_inst._updateDateTime(inst);
    }
  };

  //#######################################################################################
  // Create our own set time function
  //#######################################################################################
  $.datepicker._setTime = function (inst, date) {
    var tp_inst = this._get(inst, 'timepicker');
    if (tp_inst) {
      var defaults = tp_inst._defaults,
      // calling _setTime with no date sets time to defaults
			hour = date ? date.getHours() : defaults.hour,
			minute = date ? date.getMinutes() : defaults.minute,
			second = date ? date.getSeconds() : defaults.second;

      //check if within min/max times..
      if ((hour < defaults.hourMin || hour > defaults.hourMax) || (minute < defaults.minuteMin || minute > defaults.minuteMax) || (second < defaults.secondMin || second > defaults.secondMax)) {
        hour = defaults.hourMin;
        minute = defaults.minuteMin;
        second = defaults.secondMin;
      }

      if (tp_inst.hour_slider) tp_inst.hour_slider.slider('value', hour);
      else tp_inst.hour = hour;
      if (tp_inst.minute_slider) tp_inst.minute_slider.slider('value', minute);
      else tp_inst.minute = minute;
      if (tp_inst.second_slider) tp_inst.second_slider.slider('value', second);
      else tp_inst.second = second;

      tp_inst._onTimeChange();
      tp_inst._updateDateTime(inst);
    }
  };

  //#######################################################################################
  // Create new public method to set only time, callable as $().datepicker('setTime', date)
  //#######################################################################################
  $.datepicker._setTimeDatepicker = function (target, date, withDate) {
    var inst = this._getInst(target),
		tp_inst = this._get(inst, 'timepicker');

    if (tp_inst) {
      this._setDateFromField(inst);
      var tp_date;
      if (date) {
        if (typeof date == "string") {
          tp_inst._parseTime(date, withDate);
          tp_date = new Date();
          tp_date.setHours(tp_inst.hour, tp_inst.minute, tp_inst.second);
        }
        else tp_date = new Date(date.getTime());
        if (tp_date.toString() == 'Invalid Date') tp_date = undefined;
      }
      this._setTime(inst, tp_date);
    }

  };

  //#######################################################################################
  // override setDate() to allow setting time too within Date object
  //#######################################################################################
  $.datepicker._base_setDateDatepicker = $.datepicker._setDateDatepicker;
  $.datepicker._setDateDatepicker = function (target, date) {
    var inst = this._getInst(target),
	tp_date = (date instanceof Date) ? new Date(date.getTime()) : date;

    this._updateDatepicker(inst);
    this._base_setDateDatepicker.apply(this, arguments);
    this._setTimeDatepicker(target, tp_date, true);
  };

  //#######################################################################################
  // override getDate() to allow getting time too within Date object
  //#######################################################################################
  $.datepicker._base_getDateDatepicker = $.datepicker._getDateDatepicker;
  $.datepicker._getDateDatepicker = function (target, noDefault) {
    var inst = this._getInst(target),
		tp_inst = this._get(inst, 'timepicker');

    if (tp_inst) {
      this._setDateFromField(inst, noDefault);
      var date = this._getDate(inst);
      if (date && tp_inst._parseTime($(target).val(), true)) date.setHours(tp_inst.hour, tp_inst.minute, tp_inst.second);
      return date;
    }
    return this._base_getDateDatepicker(target, noDefault);
  };

  //#######################################################################################
  // jQuery extend now ignores nulls!
  //#######################################################################################
  function extendRemove(target, props) {
    $.extend(target, props);
    for (var name in props)
      if (props[name] === null || props[name] === undefined)
        target[name] = props[name];
    return target;
  }

  $.timepicker = new Timepicker(); // singleton instance
  $.timepicker.version = "0.9.3";

})(jQuery);