function showElement(e) {
	e.style.display = "block";
}

function hideElement(e) {
	e.style.display = "none";
}

function showHideElement(id) {
	var e = document.getElementById(id);
	
	if(e.style.display == "block") {
		hideElement(e);
	} else {
		showElement(e);
	}
}

function showImage(id, e) {
    var i = document.getElementById(id);
    
    i.alt = e.alt;
    i.src = e.src;
}