backon = new Image();
backon.src = "../Navigation/Graphics/TB2Y086a.gif"
tocon = new Image();
tocon.src = "../Navigation/Graphics/TB2Y092a.gif";
nexton = new Image();
nexton.src = "../Navigation/Graphics/TB2Y096a.gif";
topon = new Image();
topon.src = "../Navigation/Graphics/TB2Y076b.gif";
hinton =  new Image();
hinton.src = "Graphics/TB2S048a.gif";
answeron = new Image();
answeron.src = "Graphics/TB2S052a.gif";
closeon = new Image();
closeon.src = "Graphics/TB2S044a.gif";

backoff = new Image();
backoff.src = "../Navigation/Graphics/TB2Y088a.gif";
tocoff = new Image();
tocoff.src = "../Navigation/Graphics/TB2Y090a.gif";
nextoff = new Image();
nextoff.src = "../Navigation/Graphics/TB2Y098a.gif";
topoff = new Image ();
topoff.src = "../Navigation/Graphics/TB2Y074b.gif";
hintoff = new Image();
hintoff.src = "Graphics/TB2S046a.gif";
answeroff = new Image();
answeroff.src = "Graphics/TB2S050a.gif";
closeoff = new Image();
closeoff.src = "Graphics/TB2S042a.gif";



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