function ch_AColor(color)	{
	window.document.all.A.style.backgroundColor = color
}
function ch_BColor(color)	{
	window.document.all.B.style.backgroundColor = color
}
function ch_CColor(color)	{
	window.document.all.C.style.backgroundColor = color
}
function ch_DColor(color)	{
	window.document.all.D.style.backgroundColor = color
}
function ch_EColor(color)	{
	window.document.all.E.style.backgroundColor = color
}