function toggleLayer(sourceElement, elementId)
{
	var element;

	if (document.getElementById)
	{
		// this is the way the standards work
		element = document.getElementById(elementId);
	}
	else if (document.all)
	{
		// this is the way old msie versions work
		element = document.all[elementId];
	}
	else if (document.layers)
	{
		// this is the way nn4 works
		element = document.layers[elementId];
	}

	element.style.display = element.style.display ? '' : 'inline';
	
	sourceElement.innerHTML = element.style.display ? '&lt; <strong style="text-decoration:none;">less</strong>' : '<strong style="text-decoration:none;">more</strong> &gt; ';
}

sfHover = function() {
	var sfEls = document.getElementById("nav").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);