var selected = "";

function InsertContent(tid) 
{
	if((tid != selected)&& (selected != ""))
	{
		document.getElementById(selected).style.display = "none";
	}
	document.getElementById(tid).style.display = "";
	selected = tid;
}

function RemoveContent(tid) 
{
	if(tid != selected)
	{
		document.getElementById(tid).style.display = "none";
	}
}

function SelectContent(tid) 
{
	selected = tid;
	document.getElementById(selected).style.display = "";
}