function pop(hauteur,largeur,URLimage,nom){

var winl = (screen.width - largeur) / 2;
var wint = (screen.height - hauteur) / 2;
var url = '../inc/pop.php?img='+URLimage;

winprops = 'height='+hauteur+',width='+largeur+',top='+wint+',left='+winl+',scrollbars=no,resizable=no,status=no,toolbar=no' ;

win = window.open(url, nom, winprops);


}