function HorizontalMenuOnMouseOver(iButton) {
	SetBackgroundPositionY("spanHorizontalMenuButtonLeft_" + iButton, "-30px");
	SetBackgroundPositionY("spanHorizontalMenuButtonCenter_" + iButton, "-30px");
	SetBackgroundPositionY("spanHorizontalMenuButtonRight_" + iButton, "-30px");
}
function HorizontalMenuOnMouseOut(iButton) {
	SetBackgroundPositionY("spanHorizontalMenuButtonLeft_" + iButton, "0px");
	SetBackgroundPositionY("spanHorizontalMenuButtonCenter_" + iButton, "0px");
	SetBackgroundPositionY("spanHorizontalMenuButtonRight_" + iButton, "0px");
}
function HorizontalMenuOnClick(URL) {
	window.location = URL;
}

function SetBackgroundPositionY(TagId, Value) {
	if ( document.getElementById(TagId).style.backgroundPositionY != Value ) document.getElementById(TagId).style.backgroundPositionY = Value;
}