function showCnt(id)
{
	document.getElementById(id).style.visibility = "visible";
	document.getElementById(id).style.display = "block";
}
function hideCnt(id)
{
	window.document.getElementById(id).style.visibility = "hidden";
	document.getElementById(id).style.display = "none";
}
function enableTab(id)
{
	document.getElementById(id).className = "enable";
	}
function disableAllTabs()
{document.getElementById('tabFeatures').className = "disable";
	document.getElementById('tabHow').className = "disable";
	document.getElementById('tabSpec').className = "disable";
	document.getElementById('tabPackage').className = "disable";
	document.getElementById('tabGallery').className = "disable";
	}
function disableAllNanoTabs()
{document.getElementById('tabFeatures').className = "disable";
	document.getElementById('tabSpec').className = "disable";
	document.getElementById('tabGallery').className = "disable";
	document.getElementById('tabPhysical').className = "disable";
	}