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);

function expandAns(link, divId) 
{ 
	var lText = link.innerHTML; 
	var d = document.getElementById(divId);
	if (lText == 'Show Answer &gt;&gt;') 
	{ 
		link.innerHTML = '&lt;&lt; Hide Answer'; 
		d.style.display = 'block'; 
	}
	else 
	{
		link.innerHTML = 'Show Answer &gt;&gt;'; 
		d.style.display = 'none'; 
	}
}

function expandText(link, divId) 
{ 
	var lText = link.innerHTML; 
	var d = document.getElementById(divId);
	if (lText == 'Show More &gt;&gt;') 
	{ 
		link.innerHTML = '&lt;&lt; Hide Details'; 
		d.style.display = 'block'; 
	}
	else 
	{
		link.innerHTML = 'Show More &gt;&gt;'; 
		d.style.display = 'none'; 
	}
}