var num=0;

function arriere(nbphoto, lieu){

	if (num == 0)
		 num = nbphoto-1
	else
		 num--;

	if (navigator.appName.indexOf("Microsoft") != -1) {
		eval('document.pics'+lieu+'.title.innerHTML=credphoto'+lieu+num);
	}
	eval('document.pics'+lieu+'.src=Photo'+lieu+num+'.src');
}

function avant(nbphoto, lieu)
{
	if (num == nbphoto-1)
		 num = 0
	else
		 num++;
		 
	if (navigator.appName.indexOf("Microsoft") != -1) {
		eval('document.pics'+lieu+'.title.innerHTML=credphoto'+lieu+num);
	}
	eval('document.pics'+lieu+'.src=Photo'+lieu+num+'.src');
}