// <![CDATA[

function toggleProjectItem( markId, itemId, toggleDuration ) {
  if ( $(itemId).visible() ) {
    // hide
    if ( toggleDuration != 0.0 ) {
      Effect.Fade( itemId, {duration: 0.8*0.375*toggleDuration, to: 0.05} ); 
      Effect.SlideUp( itemId, {delay: 0.8*0.375*toggleDuration, duration: 0.8*0.625*toggleDuration} );
    } else {
      $(itemId).setOpacity( 0.0 );
      $(itemId).hide( );
    }
    $(markId).style.background = "url(img/collapsed.png) no-repeat";
  } else {
    // show
    if ( toggleDuration != 0.0 ) {
      Effect.SlideDown( itemId, {duration: toggleDuration/2} );
      Effect.Appear( itemId, {delay: toggleDuration/2, duration: toggleDuration/2, to: 0.99} ); 
    } else {
      $(itemId).show( );
      $(itemId).setOpacity( 0.99 );
    }
    $(markId).style.background = "url(img/expanded.png) no-repeat";
  }

  return false;
}

// ]]>