function popup(id_article, x, y) {
	var winl = (screen.width - x) / 2;
    var wint = (screen.height - y) / 2;
	p = window.open("pop.php3?id_article="+id_article, "pop", "width="+x+", height="+y+", menubar=no, statusbar=no, top="+wint+",left="+winl+", resizable=0, scrollbars=yes");
	p.focus();
}

function popupurl(url, x, y) {
	var winl = (screen.width - x) / 2;
    var wint = (screen.height - y) / 2;
	p = window.open(url, "pop", "width="+x+", height="+y+", menubar=no, statusbar=no, top="+wint+",left="+winl+", resizable=0, scrollbars=yes");
	p.focus();
}