function HideContent(d) 
{
	if(d.length < 1) { return; }
	document.getElementById(d).style.display = "none";
}
function ShowContent(d) 
{
	if(d.length < 1) { return; }
	document.getElementById(d).style.display = "block";
}
function ReverseContentDisplay(d) 
{
	HideAll();
	if(d.length < 1) { return; }
	if(document.getElementById(d).style.display == "none") 
	{ 
		document.getElementById(d).style.display = "block"; 
	}
	else 
	{ 
		document.getElementById(d).style.display = "none"; 
	}
}

function HideAll()
{
	HideContent("one");
	HideContent("two");
	HideContent("three");
	HideContent("four");
	HideContent("five");
	HideContent("six");
	HideContent("seven");
	HideContent("eight");
}