/* 
	whichtype needs to be a string: either "header" or "footer" 
*/

function showdiv(whichtype,divnum)
{
	if(whichtype=="header")
	{
		hidediv("header",currentheader);
		currentheader=divnum;
	}
	else
	{
		hidediv("footer",currentfooter);
		currentfooter=divnum;
	}
	var elem, vis;
	elem = document.getElementById(whichtype+"-"+divnum);
	vis = elem.style;
	vis.display = "block";
}

function hidediv(whichtype,divnum)
{
	var elem, vis;
	elem = document.getElementById(whichtype+"-"+divnum);
	vis = elem.style;
	vis.display = "none";
}