function swapDiv(sid, hids)
{
	var hid;

	for (var i=0; i < hids.length; i++)
	{
		var el;
		hid = hids[i];
		
		el = document.getElementById(hid);
		if(el)
		{
			if(el.style.display != "none")
			{
				el.style.display = "none";
			}
		}
	}
	
	document.getElementById(sid).style.display = "block";
}