var BG_ON = "#7799bb",
	BG_OFF = "#557799",
	BG_ON_C = "#7799bb",
	BG_OFF_C = "#5588bb";
function On		(name) {
	var obj = document.getElementById(name).style;
	obj.background = BG_ON;
}
function Off	(name) {
	var obj = document.getElementById(name).style;
	obj.background = BG_OFF;
}
function On_C	(name) {
	var obj = document.getElementById(name).style;
	obj.background = BG_ON_C;
}
function Off_C	(name) {
	var obj = document.getElementById(name).style;
	obj.background = BG_OFF_C;
}