function ToggleDisplay(oButton, oItems)
{
	if ((oItems.style.display == "") || (oItems.style.display == "none"))	{
		oItems.style.display = "block";
		oButton.src = "../images/minus.gif";
	}	else {
		oItems.style.display = "none";
		oButton.src = "../images/plus.gif";
	}
}