var newwindow;
function poptastic(s_url, w, h)
{
    url = '/?action=popup&src=/obrazki/img_' + s_url + '_big.jpg';
	newwindow=window.open(url,'','height='+ h +',width=' + w +',left=100,  top=100,resizable=yes,scrollbars=no,toolbar=no,status=no');
	if (window.focus) {newwindow.focus()}
}