function showDrop(li, menuID) {
	var img = li.getElementsByTagName("img")
	var source = "img/button" + menuID + "OFF.gif";
	var menu = document.getElementById(menuID);
	menu.style.display = "block";
	img[0].setAttribute("src", source);
} 

function hideDrop(div, menuID) {
	var li = div.parentNode;
	var img = div.getElementsByTagName("img")
	var source = "img/button" + menuID + ".gif";
	var menu = document.getElementById(menuID);
	menu.style.display = "none";
	img[0].setAttribute("src", source);
} 

function showSub(id) {
    var subDiv = document.getElementById(id);
    subDiv.style.display = "block";
}

function hideSub(id) {
    var subDiv = document.getElementById(id);
    subDiv.style.display = "none";
}

function hoverRedON(li) {
		li.style.background = "url(img/dropDownHover.gif) repeat-x";
}

function hoverRedOFF(li) {
		li.style.background = "none";
}