//java script


// <![CDATA[ 
function pokaz_ukryj(pokaz, ukryj) { 
	document.getElementById(pokaz).style.display = "block"; 
	document.getElementById(ukryj).style.display = "none";
}


function pokaz_ukryj_element(element) {
	nn= document.getElementsByClassName(element);
	
	for (i=0; i<nn.length; i++) {
		if(nn[i].style.display == "none")
			nn[i].style.display = "block"; 
		else
			nn[i].style.display = "none";
	}
}
//]]