function popup(url, name, width, height, resize, scroll, status)
{
  var name   = ( name   == null ) ? 'img' : name;
  var width  = ( width  == null ) ?   720 : width;
  var height = ( height == null ) ?   580 : height;
  var resize = ( resize == null ) ?     1 : resize;
  var scroll = ( scroll == null ) ?     0 : scroll;
  var status = ( status == null ) ?     1 : status;

  window.open(url,
	      name,
	      'width=' + width + ', ' +
	      'height=' + height + ', ' +
	      'resize=' + resize + ', ' +
	      'scrollbars=' + scroll + ', ' +
	      'status=' + status + ', ' +
	      'location=0');
}