var HIDE = "none";
var SHOW = "block";

function showHideElement(elementName) {
	
	element = document.getElementById(elementName);
	
	if(element == null) {
		alert('element is null!');
		return;
	}
	
	if(element.style.display == SHOW) {
		element.style.display = HIDE;
		return;
	}
	
	element.style.display = SHOW;
}

function showHideLanguageMenu() {
	showHideElement("language-menu");
}