sfHover = function() {
	var sfEls = document.getElementById("menu").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);


function swapImage (elem, image, type)
{
	if (type == 'over')
	{
		elem.src = 'includes/gui/menu/' + image + '-over.jpg';
	}
	else
	{
		elem.src = 'includes/gui/menu/' + image + '-out.jpg';
	}
}

function showSubmenu()
{
	document.getElementById('submenu').style.display = 'block';
}

function hideSubmenu()
{
	document.getElementById('submenu').style.display = 'none';
}