function changeText( startText, endText, linkId )
{
	textToChange = document.getElementById( linkId );
	if (!textToChange.isOpen)
		{
			textToChange.innerHTML = endText;
			textToChange.isOpen = true;
		}
	else
		{
			textToChange.innerHTML = startText;
			textToChange.isOpen = false;
		}
}