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 = "";
}

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

function showRetail()
{
	ReverseContentDisplay('retail'); 
	HideContent('contact'); 
	HideContent('biography'); 
	HideContent('promo'); 
	HideContent('newsletter');
}
function showPromo()
{
	ReverseContentDisplay('promo'); 
	HideContent('contact'); 
	HideContent('biography');  
	HideContent('retail');
	HideContent('newsletter');
}
function showBiography()
{
	ReverseContentDisplay('biography'); 
	HideContent('contact'); 
	HideContent('retail');  
	HideContent('promo'); 
	HideContent('newsletter');
}
function showContact()
{
	ReverseContentDisplay('contact');
	HideContent('biography'); 
	HideContent('retail'); 
	HideContent('promo'); 
	HideContent('newsletter');
}
function showNewsletter()
{
	ReverseContentDisplay('newsletter');
	HideContent('biography'); 
	HideContent('retail'); 
	HideContent('promo');  
	HideContent('contact');  
}