window.onload = function() {
$('element_1').hide();
$('element_2').hide();
$('element_3').hide();
$('element_4').hide();
$('element_5').hide();
$('element_6').hide();
}

function pokaz_ukryj_start()
{
Effect.toggle('element_1', 'blind', { duration: 0.5, transition:Effect.Transitions.sinoidal });
}

function pokaz_ukryj_dojo()
{
Effect.toggle('element_2', 'blind', { duration: 0.5, transition:Effect.Transitions.sinoidal });
}

function pokaz_ukryj_scriptaculous()
{
Effect.toggle('element_3', 'blind', { duration: 0.5, transition:Effect.Transitions.sinoidal });
}

function pokaz_ukryj_mootools()
{
Effect.toggle('element_4', 'blind', { duration: 0.5, transition:Effect.Transitions.sinoidal });
}

function pokaz_ukryj_gsap()
{
Effect.toggle('element_5', 'blind', { duration: 0.5, transition:Effect.Transitions.sinoidal });
}

function pokaz_ukryj_YUI()
{
Effect.toggle('element_6', 'blind', { duration: 0.5, transition:Effect.Transitions.sinoidal });
}




