function _popup(page, title, width, height, extra) {
  var fs = window.open(page, title, 'width=' + width + ',height=' + height + ',' + extra);
  if(fs != null) {
    if(fs.opener == null)
      fs.opener=self;
    fs.focus();
    }
  }
function tell(id,cat,title) {
  _popup('./taf/tellafriend.php?id=' + id + '&cat=' + cat + '&title=' + title, 'Friend', 500, 350, '');
  }
function convert() {
  _popup('./includes/convert.html', 'Conversion', 200, 380, '');
  }
function rss_about() {
  _popup('./includes/rss_about.html', 'RSS', 420, 270, '');
  }
function show_pic(num) {
  _popup('./images/Hurricane_Katrina_' + num + '.jpg', 'Katrina', 615, 465, '');
  }
window.onerror=null;