function SwitchButtons(oButton, bHover)
{
	oButton.childNodes[0].style.display = (bHover?"none":"block");
	oButton.childNodes[1].style.display = (bHover?"block":"none");
}

function HideAllBoxes()
{
	for (var i=1; i<=3; i++)
		document.getElementById("divTab" + i).style.display = "none";
}

function ShowVideoBox(iTabId)
{
	HideAllBoxes();
	document.getElementById("divTab" + iTabId).style.display = "block";
}