function onHover(elem){
	
	var li = document.getElementById(elem);
	var main = document.getElementById('main-'+elem);
	var sub = document.getElementById('sub-'+elem);
	
	li.style.backgroundImage = "url(images/white-bg.jpg)";
	li.style.backgroundRepeat = "repeat-x";
	main.style.color = "#000";
	sub.style.color = "#000";
}

function onOut(elem){
	
	var li = document.getElementById(elem);
	var main = document.getElementById('main-'+elem);
	var sub = document.getElementById('sub-'+elem);
	
	li.style.background = "none";
	main.style.color = "#FFF";
	sub.style.color = "#FFF";
}