function hideMenu(menuId) {

	var UlMenu = document.getElementById(menuId);
	var i = 0, counter = 0;
	while(elementMenu = UlMenu.getElementsByTagName('li')[i++]) {
		if(counter > 4) {
		        elementMenu.className = 'hidden';
		}
		counter++;
	}
	
	
	var liMore = document.createElement('li');
	liMore.className = 'more';
	var linkMore = document.createElement('a');
	var linkMoreText = document.createTextNode('Zobacz całe archiwum');
	linkMore.setAttribute('href','#');
	linkMore.setAttribute('onclick','javascript:showMenu("'+menuId+'");return false;');
	linkMore.appendChild(linkMoreText);
	liMore.appendChild(linkMore);
	
	UlMenu.appendChild(liMore);
}

function showMenu(menuId) {

	var UlMenu = document.getElementById(menuId);
	var i = 0;
	while(elementMenu = UlMenu.getElementsByTagName('li')[i++]) {
		if(elementMenu.className == 'hidden') {
		 	elementMenu.removeAttribute('class');     
		}
		if(elementMenu.className == 'more') {
		 	UlMenu.removeChild(elementMenu);     
		}
	}

}
$(function() {
	$('a.lightbox').lightBox({fixedNavigation:true});; 
});