var photo = new Array(10);
for (var i=0; i< photo.length;i++)
	photo[i]= new Image();
photo[0].src='medias/portraits/portrait_nb/copyright_varlet_portrait_nb_01.jpg';
photo[1].src='medias/portraits/portrait_nb/copyright_varlet_portrait_nb_02.jpg';
photo[2].src='medias/portraits/portrait_nb/copyright_varlet_portrait_nb_03.jpg';
photo[3].src='medias/portraits/portrait_nb/copyright_varlet_portrait_nb_04.jpg';
photo[4].src='medias/portraits/portrait_nb/copyright_varlet_portrait_nb_05.jpg';
photo[5].src='medias/portraits/portrait_nb/copyright_varlet_portrait_nb_06.jpg';
photo[6].src='medias/portraits/portrait_nb/copyright_varlet_portrait_nb_07.jpg';
photo[7].src='medias/portraits/portrait_nb/copyright_varlet_portrait_nb_08.jpg';
photo[8].src='medias/portraits/portrait_nb/copyright_varlet_portrait_nb_09.jpg';
photo[9].src='medias/portraits/portrait_nb/copyright_varlet_portrait_nb_10.jpg';
var n=0;

function next() {
n= ++n;
if (n == photo.length) n=0;
window.document.image.src=photo[n].src;
}

function previous() {
n= --n;
if (n == photo.length) n=0;
window.document.image.src=photo[n].src;
}