function swapOverSimple(name)
{
	document.images[name].src = name + 'Over.gif';
}
function swapOutSimple(name)
{
	document.images[name].src = name + '.gif';
}
function swapOver(layer, feature)
{
	var style1 = document.getElementById(document.currentLayer).style;
	style1.visibility = "hidden";
	var style2 = document.getElementById(layer).style;
	style2.visibility = "visible";
	if(document.images['feature'])
		{
		document.images['feature'].src = feature;
		}
}
function swapOverNoPic(layer)
{
	var style1 = document.getElementById(document.currentLayer).style;
	style1.visibility = "hidden";
	var style2 = document.getElementById(layer).style;
	style2.visibility = "visible";
}
function swapOut(layer)
{
	var style1 = document.getElementById(layer).style;
	style1.visibility = "hidden";
	var style2 = document.getElementById(document.currentLayer).style;
	style2.visibility = "visible";
}
function firstShow()
{
	var style2 = document.getElementById(document.currentLayer).style;
	style2.visibility = "visible";
}
function preload(name)
{
if(!document.myImages)
	{
	document.myImages = new Array;
	}
if(document.myImages)
	{
	document.myImages[name] = new Image;
	document.myImages[name].src = name;
	}
}