function popup(page,nom,largeur,hauteur,options) {
	var top=(screen.height-hauteur)/2;
	var left=(screen.width-largeur)/2;
	window.open(page,nom,"top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+options);
}

function zoomImage(source) {
    //enleve la string minis/
    source = source.replace('/minis', '');    
    popup(source,'zoom','700','500','resizable=1,scrollbars=1');
}