[HTML] pobierz, plaintext 
<input type="radio" name="nazwa_musi_byc_taka_sama" value="pokaz" onClick="document.getElementById('niewidoczny_div').style.display='block';" />pokaz diva<br />
<input type="radio" name="nazwa_musi_byc_taka_sama" value="ukryj" onClick="document.getElementById('niewidoczny_div').style.display='none';" />ukryj diva
[HTML] pobierz, plaintext 

[HTML] pobierz, plaintext 
input type="checkbox" name="nazwa_musi_byc_taka_sama" value="pokaz" onClick="document.getElementById('niewidoczny_div').style.display='block';" >
[HTML] pobierz, plaintext 

[HTML] pobierz, plaintext 
function poka(el) {
				var a = document.getElementById('abc');
				var b = document.getElementById('check');
					if(b.value == "1") {
						b.value = "0";
						a.style.display = "none";
					}else if(b.value == "0") {
						b.value = "1";
						a.style.display = "block";
					}
			}
[HTML] pobierz, plaintext 

[HTML] pobierz, plaintext 
<input type="checkbox" name="name" id="check" value="1" onClick="poka();">
		<div id="abc" style="display:block">
			dsadasdas
		</div>
[HTML] pobierz, plaintext