function rozbal(name, zabal){
	var zabal=typeof zabal!="undefined" ? zabal : ""
	if (zabal) {
		var schovej = document.getElementById(zabal);
		schovej.style.display = 'none'
	}
	var div = document.getElementById(name);
	if(div.style.display == 'none'){
		div.style.display = 'block';
	} else {
		div.style.display = 'none';
	}
	return false;
}