function changeImage(chemImg) {
	$('.extension_photo').attr("src",chemImg);
}
function changeImage2(chemImg) {
	$('.refe_photo').attr("src",chemImg);
}
function changeClass(classe,cpt,debClass) {
	$('.'+debClass+'_mini_'+cpt).addClass(classe);
	$('.'+debClass+'_mini_'+cpt).removeClass(debClass+'_mini');
}
function enleveClass(classe,cpt,debClass) {
	$('.'+debClass+'_mini_'+cpt).removeClass(classe);
	$('.'+debClass+'_mini_'+cpt).addClass(debClass+'_mini');
}