function ShowOnly(which)
{
	divToUse = document.getElementById("content");
	numOfItems = divToUse.getElementsByTagName("span");

	totalamount = numOfItems.length;

	for (p = 1; p <= totalamount; p++)
		{
			document.getElementById(["divnumber"+p]).style.display = "none";
		}

	if(which.length < 1) { return; }
	document.getElementById(which).style.display = "block";
}