function navOn(source, light) {
	if (light) {
		source.style.backgroundColor='#bde8f6';
	} else {
		source.style.backgroundColor='#2020ab';
	}
	source.style.cursor = 'hand';
	if (source.children) // MSIE4+
		source.children[0].children[0].style.color = '#ff8';
	else
		source.firstChild.firstChild.style.color = '#ff8';
}
function navOff(source) {
	source.style.backgroundColor='';
	if (source.children) // MSIE4+
		source.children[0].children[0].style.color = '';
	else
		source.firstChild.firstChild.style.color = '';
}