function setStyle(elementId, style)
{
	var element = document.getElementById(elementId);
	if (element == null)
		return;

	element.className = style;
}

function turnVisibility(elementId)
{
	var element = document.getElementById(elementId);
	if (element == null)
		return;

	if (element.style.display == 'block')
	{
		element.style.display = 'none';
	}
	else
	{
		element.style.display = 'block';
	}
}

function turnText(elementId, text1, text2)
{
	var element = document.getElementById(elementId);
	if (element == null)
		return;

	if (element.innerHTML == text1)
		element.innerHTML = text2;
	else
		element.innerHTML = text1;
}