// JavaScript Document
var photo1cache = "photo1";
var photo1montre = "photo2";

var photo2cache = 'photo3';
var photo2montre = 'photo4';

function changerPhoto(){
	$(photo1cache).hide();
	$(photo1montre).show();
	
	if(photo1cache=='photo1'){
		photo1cache = 'photo2';
		photo1montre = 'photo1';
	}else{
		photo1cache = 'photo1';
		photo1montre = 'photo2';
	}
	
	$(photo2cache).hide();
	$(photo2montre).show();
	
	if(photo2cache=='photo3'){
		photo2cache = 'photo4';
		photo2montre = 'photo3';
	}else{
		photo2cache = 'photo3';
		photo2montre = 'photo4';
	}
}

function lire(){
	
	mon_executer = new PeriodicalExecuter(changerPhoto, 3);	
}

Event.observe(window,'load',lire);