function toggle_block(id, display_collapsed, display_opened)
{
  var visible = $(id).next().getStyle('display');
  if (visible != 'none')
  {
    $(id).innerHTML = display_collapsed;
    Effect.SlideUp($(id).next().identify(), {duration: 0.5});
  }
  else
  {
    $(id).innerHTML = display_opened;
    Effect.SlideDown($(id).next().identify(), {duration: 0.5});
  }
  //$(id).next().toggle();
}


var Popup = {
  open: function(options)
  {
    this.options = {
      url: '#',
      width: 300,
      height: 300
    }
    Object.extend(this.options, options || {});
    window.open(this.options.url, '', 'width='+this.options.width+',height='+this.options.height);
    return false;
  }
}