function buttonOver(x)	{
	document.getElementById(x).style.color = "white";
	return true;
}
function buttonOut(x)	{
	document.getElementById(x).style.color = "black";
	return true;
}
function subbuttonOver(x)	{
	document.getElementById(x).style.color = "white";
	return true;
}
function subbuttonOut(x)	{
	document.getElementById(x).style.color = "black";
	return true;
}