function showHideDetails(divid, link) {
  $(divid).toggle();
  if (link.innerHTML == '+ czytaj więcej') {

    link.innerHTML = '- ukryj szczegóły';
  } else {
    link.innerHTML = '+ czytaj więcej';
  }
}

function startBanerPionAnimation(divid) {
	var hasUnique = false;
	var imageNumber = 0;
	var imagePrefix = 'http://images.scjo.pl/banery-pionowe/pion-';
	do {
		imageNumber = Math.floor(Math.random() * 57 + 1);
		var ban1HasIt = $('banerPion1').src == imagePrefix + imageNumber + '.jpg';
		var ban2HasIt = $('banerPion2').src == imagePrefix + imageNumber + '.jpg'; 
		var ban3HasIt = $('banerPion3').src == imagePrefix + imageNumber + '.jpg';
		if (ban1HasIt || ban2HasIt || ban3HasIt) {
			hasUnique = false;
		} else {
			hasUnique = true;
		}
	} while (!hasUnique);
	$(divid).src = imagePrefix + imageNumber + '.jpg';
	setTimeout("startBanerPionAnimation('" + divid + "')", 21000);
}

function init() {
	setTimeout("startBanerPionAnimation('banerPion1')", 0);
	setTimeout("startBanerPionAnimation('banerPion2')", 7000);
	setTimeout("startBanerPionAnimation('banerPion3')", 14000);

	var menuLinks = $$('.menulink');
	for (var i = 0; i < menuLinks.length; i++) {
		Event.observe(menuLinks[i], 'mouseover', function(event) {
			Event.element(event).setStyle({backgroundColor: '#666'});
		});
		Event.observe(menuLinks[i], 'mouseout', function(event) {
			Event.element(event).setStyle({backgroundColor: '#444'});
		});
	}
}

window.onload = init;