insideoff = new Image();
insideoff.src = "images/lookinside.gif";
insideon = new Image();
insideon.src = "images/lookinside_over.gif";
stayoff = new Image();
stayoff.src = "images/comeandstay.gif";
stayon = new Image();
stayon.src = "images/comeandstay_over.gif";
homeoff = new Image();
homeoff.src = "images/home.gif";
homeon = new Image();
homeon.src = "images/home_over.gif";

function doSwap(imgName){
	if(document.images){
		document[imgName].src = eval(imgName + "on.src");
	}
}

function swapBack(imgName){
	if(document.images){
		document[imgName].src = eval(imgName + "off.src");
	}
}