function isDOMCapable(){
	if (document.implementation){
		if (document.implementation.hasFeature){
			if (document.implementation.hasFeature("html", "1.0")){
				return true;
			}
		}
	}
	return false;
}

function rozbalovacToggle(idElement){
	if (isDOMCapable()){
		var elem = document.getElementById(idElement);
		if (elem){
			if (elem.style.display == 'none'){
				elem.style.display = 'block';
			} else {
				elem.style.display = 'none';
			}
		}
	}
}

function rozbalovacRozbal(idElement){
	if (isDOMCapable()){
		var elem = document.getElementById(idElement);
		if (elem){
			elem.style.display = 'block';
		}
	}
}

function rozbalovacZabal(idElement){
	if (isDOMCapable()){
		var elem = document.getElementById(idElement);
		if (elem){
			elem.style.display = 'none';
		}
	}
}