function showNav(menu)
{
	switch(menu)
	{
		case('profile'):
			showlayer("1");
		break;			
		case('products'):
			showlayer("2");
		break;
	}
}
function hideNav(menu)
{
	switch(menu)
	{
		case('profile'):
			hidelayer("1");
		break;			
		case('products'):
			hidelayer("2");
		break;		
	}
}
function showlayer(n)
{
	if (document.getElementById('layer' + n)){
	   document.getElementById('layer' + n).style.visibility='visible';
	}
} 
function hidelayer(n)
{
	if (document.getElementById('layer' + n)){
	   document.getElementById('layer' + n).style.visibility='hidden';
	}
}