<!--
if ( document.images )
{

	home_on = new Image();
	home_on.src = "images/butts/home_on.gif";
	home_off = new Image();
	home_off.src = "images/butts/home.gif";

	contact_on = new Image();
	contact_on.src = "images/butts/contact_on.gif";
	contact_off = new Image();
	contact_off.src = "images/butts/contact.gif";

}

function turnOn(imageName)
{
	if (document.images)
	{
		document[imageName].src = eval(imageName + "_on.src");
	}
}

function turnOff(imageName)
{
	if (document.images)
	{
		document[imageName].src = eval(imageName + "_off.src");
	}
}

function showLayer( layerId )
{
	var layer = document.getElementById(layerId);
	if ( layer != undefined )
	{
	    layer.style.visibility = "inherit";
	}
}

function hideLayer( layerId )
{
	var layer = document.getElementById(layerId);
	if ( layer != undefined )
	{
	    layer.style.visibility = "hidden";
	}
}

//-->