function rozwinMenu(element){
	element = document.getElementById(element); 
	if (element.style.display == 'block')
		element.style.display = 'none';
	else
		element.style.display = 'block';}
		
function rozwinMenuu(element){
	element = document.getElementById(element);
	if (element.style.display == 'block')
		element.style.display = 'none';
	else
		element.style.display = 'block';}


function rozwinWszystkie(){
	var element = document.getElementById("menu_1"); 
	var styl = element.style.display ;
	if (styl == 'block')
	  styl = 'none' ;
	else
	  styl = 'block' ;
	for (i=1; i<=16; i++) {
	   element = document.getElementById("menu_"+i); 
	   element.style.display = styl;}
}   




function rozwinMenud(element){
	element = document.getElementById(element);
	if (element.style.display == 'block')
		element.style.display = 'none';
	else
		element.style.display = 'block';}

function rozwinWszystkied() {
	var element = document.getElementById("menu_1");
	var styl = element.style.display ;
	if (styl == 'block')
	  styl = 'none' ;
	else
	  styl = 'block' ;
	for (i=1; i<=16; i++) {
	   element = document.getElementById("menu_"+i);
	   element.style.display = styl;
	}
}

function rozwinMenui(element) {
	element = document.getElementById(element);
	if (element.style.display == 'block')
		element.style.display = 'none';
	else
		element.style.display = 'block';
}

function rozwinWszystkiei() {
	var element = document.getElementById("menu_1");
	var styl = element.style.display ;
	if (styl == 'block')
	  styl = 'none' ;
	else
	  styl = 'block' ;
	for (i=1; i<=16; i++) {
	   element = document.getElementById("menu_"+i);
	   element.style.display = styl;
	}
}