function toggleLayer(whichLayer, furtherLayer, anchorid)
{
// this is the way the standards work
var wLayer = document.getElementById(whichLayer);
var fLayer = document.getElementById(furtherLayer);
if(wLayer){
	var style2 = wLayer.style;
	style2.display = style2.display? "":"none";
}
if(fLayer){
	var style3 = fLayer.style;
	style3.display = style3.display? "":"none";
}
var a = document.getElementById(anchorid);
if(a.innerHTML == "show details") a.innerHTML = "hide details"; else a.innerHTML = "show details";
}