// Popups

var popup = null;

function popdown()
{
   if( popup && ! popup.closed )
      pop.close();
}

function popupWindow( obj, w, h )
{
   var url = ( obj.getAttribute ) ? obj.getAttribute( 'href' ) : obj.href;

   if( !url )
      return true;

   w = (w) ? w += 30 : 250;
   h = (h) ? h += 65 : 450;

   var args = 'width=' + w + ', height=' + h +', resizable';
   popdown();

   popup = window.open( url, '', args );

   return (popup) ? false : true;
}