//============================================================================
// Add new properties and methods to the Date object.
//============================================================================

// Properties

Date.prototype.monthNames = new Array("January", "February", "March", "April",
  "May", "June", "July", "August", "September", "October", "November",
  "December");
Date.prototype.moisComplets = new Array("Janvier", "Février", "Mars", "Avril",
  "Mai", "Juin", "Juillet", "Aout", "Septembre", "Octobre", "Novembre",
  "Décembre");
Date.prototype.moisAbreges = new Array("Jan", "Fév", "Mar", "Avr",
  "Mai", "Jun", "Jul", "Aou", "Sep", "Oct", "Nov",
  "Déc");
Date.prototype.savedDate  = null;

// Methods

Date.prototype.getMonthName = dateGetMonthName;
Date.prototype.getMoisComplet = dateGetMoisComplet;
Date.prototype.getMoisAbrege = dateGetMoisAbrege;
Date.prototype.getDays      = dateGetDays;
Date.prototype.addDays      = dateAddDays;
Date.prototype.addMonths    = dateAddMonths;
Date.prototype.addYears     = dateAddYears;
Date.prototype.setDateJJMMAAAA     = dateSetDateJJMMAAAA;

//----------------------------------------------------------------------------
// getMonthName(): Returns the name of the date's month.
//----------------------------------------------------------------------------

function dateGetMonthName() {

  return this.monthNames[this.getMonth()];
}

function dateGetMoisComplet() {

  return this.moisComplets[this.getMonth()];
}

function dateGetMoisAbrege() {

  return this.moisAbreges[this.getMonth()];
}

//----------------------------------------------------------------------------
// getDays(): Returns the number of days in the date's month.
//----------------------------------------------------------------------------

function dateGetDays() {

  var tmpDate, d, m;

  tmpDate = new Date(Date.parse(this));
  m = tmpDate.getMonth();
  d = 28;
  do {
    d++;
    tmpDate.setDate(d);
  } while (tmpDate.getMonth() == m);

  return d - 1;
}

//----------------------------------------------------------------------------
// addDays(n): Adds the specified number of days to the date.
//----------------------------------------------------------------------------

function dateAddDays(n) {

  // Add the specified number of days.

  this.setDate(this.getDate() + n);

  // Reset the new day of month.

  this.savedDate = this.getDate();
}

//----------------------------------------------------------------------------
// addMonths(n): Adds the specified number of months to the date, adjusting
// the day of the month if necessary.
//----------------------------------------------------------------------------

function dateAddMonths(n) {

  // Save the day of month if not already set.

  if (this.savedDate == null)
    this.savedDate = this.getDate();

  // Set the day of month to the first to avoid rolling.

  this.setDate(1);

  // Add the specified number of months.

  this.setMonth(this.getMonth() + n);

  // Restore the saved day of month, if possible.

  this.setDate(Math.min(this.savedDate, this.getDays()));
}

//----------------------------------------------------------------------------
// addYears(n): Adds the specified number of years to the date, adjusting the
// day of the month for leap years.
//----------------------------------------------------------------------------

function dateAddYears(n) {

  // Save the day of month if not already set.

  if (this.savedDate == null)
    this.savedDate = this.getDate();

  // Set the day of month to the first to avoid rolling.

  this.setDate(1);

  // Add the specified number of years.

  this.setFullYear(this.getFullYear() + n);

  // Restore the saved day of month, if possible.

  this.setDate(Math.min(this.savedDate, this.getDays()));
}

function dateSetDateJJMMAAAA(chaine) {
	jour = chaine.substring(0, 2);
	mois = chaine.substring(3, 5);
	annee = chaine.substring(6, 10);
	mois = mois - 1;
	this.setDate( jour);
	this.setMonth( mois);
	this.setYear( annee);
}