function photo(src,i,nbp){
	i=i+1;
	if(i<1){i=nbp;}
	if(i>nbp){i=1;}
	text='<div  id="photo_gr"><table height="480" style="position: relative; width: 80%; left: 10%;text-align: center;" align="center"><tr><td colspan="2"><img src="'+src+' ('+i+').jpg"  style="cursor:pointer;" alt="Chargement ..." onClick="photo(\''+src+'\','+i+',\''+nbp+'\');" /></td></tr><tr><td><a  style="cursor:pointer;" onClick="photo(\''+src+'\','+(i-2)+',\''+nbp+'\');">Photo précédente</a></td><td><a  style="cursor:pointer;" onClick="photo(\''+src+'\','+i+',\''+nbp+'\');">Photo suivante</a></td></tr></table></div>';
	
	document.getElementById('photo_gr').innerHTML=text;
	}