// JavaScript Document
function addLoadListener(fn)
{
  if (typeof window.addEventListener != 'undefined')
  {
    window.addEventListener('load', fn, false);
  }
  else if (typeof document.addEventListener != 'undefined')
  {
    document.addEventListener('load', fn, false);
  }
  else if (typeof window.attachEvent != 'undefined')
  {
    window.attachEvent('onload', fn);
  }
  else
  {
    var oldfn = window.onload;
    if (typeof window.onload != 'function')
    {
      window.onload = fn;
    }
    else
    {
      window.onload = function()
      {
        oldfn();
        fn();
      };
    }
  }
}

/****************************************/
// ADD & REMOVE CLASS
/****************************************/
function addClass(target, classValue)
{
  var pattern = new RegExp("(^| )" + classValue + "( |$)");

  if (!pattern.test(target.className))
  {
    if (target.className == "")
    {
      target.className = classValue;
    }
    else
    {
      target.className += " " + classValue;
    }
  }

  return true;
}

function removeClass(target, classValue)
{
  var removedClass = target.className;
  var pattern = new RegExp("(^| )" + classValue + "( |$)");

  removedClass = removedClass.replace(pattern, "$1");
  removedClass = removedClass.replace(/ $/, "");

  target.className = removedClass;

  return true;
}

/****************************************/
// DATE AND TIME
/****************************************/
Date.prototype.getDateString = function(str)
{
  var dnames = ['Sunday', 'Monday', 'Tuesday', 'Wednesday',
      'Thursday', 'Friday', 'Saturday', 'Sunday'];

  var mnames = ['January', 'February', 'March', 'April',
      'May', 'June', 'July', 'August', 'September',
      'October', 'Novemeber', 'December'];

  str = str.replace('%day', dnames[this.getDay()]);
  str = str.replace('%date', this.getDate());
  str = str.replace('%ordinal', this.getDateOrdinal());
  str = str.replace('%month', mnames[this.getMonth()]);
  str = str.replace('%year', this.getFullYear());

  return str;
};

Date.prototype.getDateOrdinal = function()
{
  var n = this.getDate();

  var ord = 'th';

  if (n % 10 == 1 && n % 100 != 11)
  {
    ord = 'st';
  }
  else if (n % 10 == 2 && n % 100 != 12)
  {
    ord = 'nd';
  }
  else if (n % 10 == 3 && n % 100 != 13)
  {
    ord = 'rd';
  }

  return ord;
};

Date.prototype.getISODate = function()
{
  var mth = this.getMonth() + 1;
  mth = (mth < 10 ? '0' : '') + mth;

  var date = this.getDate();
  date = (date < 10 ? '0' : '') + date;

  return this.getFullYear() + mth + date;
};

Date.prototype.getTimeString = function(clock)
{
  var str = '';
  var hrs = this.getHours();

  if (clock == 12)
  {
    var meridian = hrs < 12 ? 'am' : 'pm';

    hrs = hrs % 12;
    if (hrs == 0) { hrs = 12; }
    str += hrs;
  }
  else
  {
    str += (hrs < 10 ? '0' : '') + hrs;
  }

  str += ':';
  var mins = this.getMinutes();
  str += (mins < 10 ? '0' : '') + mins;

  if (clock == 12) { str += meridian; }

  return str;
};


/****************************************/
// ADD LOAD LISTENERS
/****************************************/
function stopEvent(event)
{
  if (typeof event.stopPropagation != "undefined")
  {
    event.stopPropagation();
  }
  else
  {
    event.cancelBubble = true;
  }

  return true;
}

function attachEventListener(target, eventType, functionRef, capture)
{
  if (typeof target.addEventListener != "undefined")
  {
    target.addEventListener(eventType, functionRef, capture);
  }
  else if (typeof target.attachEvent != "undefined")
  {
    var functionString = eventType + functionRef;
    target["e" + functionString] = functionRef;
    
    target[functionString] = function(event)
    {
      if(typeof event == "undefined"){event = window.event;} target["e" + functionString](event);
    };
    
    target.attachEvent("on" + eventType, target[functionString]);
  }
  else
  {
    eventType = "on" + eventType;

    if (typeof target[eventType] == "function")
    {
      var oldListener = target[eventType];

      target[eventType] = function()
      {
        oldListener();

        return functionRef();
      };
    }
    else
    {
      target[eventType] = functionRef;
    }
  }

  return true;
}

function detachEventListener(target, eventType, functionRef, capture)
{
  if (typeof target.removeEventListener != "undefined")
  {
    target.removeEventListener(eventType, functionRef, capture);
  }
  else if (typeof target.detachEvent != "undefined")
  {
    var functionString = eventType + functionRef;

    target.detachEvent("on" + eventType, target[functionString]);

    target["e" + functionString] = null;
    target[functionString] = null;
  }
  else
  {
    target["on" + eventType] = null;
  }

  return true;
}

/*function attachEventListener(target, eventType, functionRef, capture)
{
  if (typeof target.addEventListener != "undefined")
  {
    target.addEventListener(eventType, functionRef, capture);
  }
  else if (typeof target.attachEvent != "undefined")
  {
    target.attachEvent("on" + eventType, functionRef);
  }
  else
  {
    eventType = "on" + eventType;

    if (typeof target[eventType] == "function")
    {
      var oldListener = target[eventType];

      target[eventType] = function()
      {
        oldListener();

        return  functionRef();
      }
    }
    else
    {
      target[eventType] = functionRef;
    }
  }

  return true; 
}*/

/****************************************/
// RETREIVE COMPUTED STYLE
/****************************************/
function retrieveComputedStyle(element, styleProperty)
{
  var computedStyle = null;

  if (typeof element.currentStyle != "undefined")
  {
    computedStyle = element.currentStyle;
  }
  else
  {
    computedStyle = document.defaultView.getComputedStyle(element, null);
  }

  return computedStyle[styleProperty];
}

/****************************************/
// ADDING / REMOVING ARRAY ELEMENTS
/****************************************/
Array.prototype.push = function()
{
  for (var i = 0; i < arguments.length; i++)
  {
    this[this.length] = arguments[i];
  }
  return arguments[i - 1];
};
Array.prototype.splice = function(a, b)
{
  var tmp = [];
  for (var i = a + b; i < this.length; i++)
  {
    tmp[tmp.length] = this[i];
  }

  var rem = [];
  for (i = a; i < a + b; i++)
  {
    rem[rem.length] = this[i];
  }

  this.length = a;

  for (i = 2; i < arguments.length; i++)
  {
    this[this.length] = arguments[i];
  }

  for (i = 0; i < tmp.length; i++)
  {
    this[this.length] = tmp[i];
  }

  return rem;
};