function visible(idpr)
{
	var pr = document.getElementById(idpr);
 
	if (pr.style.display == "none") {
		pr.style.display = "block";
	}
}

function cache(idpr)
{
	var pr = document.getElementById(idpr);
 
	if (pr.style.display == "block") {
		pr.style.display = "none";
	}
}

function visibleCache(idpr)
{
	var pr = document.getElementById(idpr);
 
	if (pr.style.display == "none") {
		pr.style.display = "block";
	}
	else
	{
		pr.style.display = "none";
	}
}