function img_popup(nom,title,w,h) {
var uh = document.body.clientHeight;
var uw = document.body.clientWidth;
var html = ''+title+'!['+title+' [Закрыть]]('+nom+')
'
PopupWindow = window.open("", title, "left="+(uw/2-w/2)+",top="+(uh/2-h/2)+",location=no,width="+w+",height="+h+",scrollbars=no");
PopupWindow.document.write(html);
}