backon = new Image();
backon.src = "../Navigation/Graphics/TB2Y140a.gif"
tocon = new Image();
tocon.src = "../Navigation/Graphics/TB2Y146a.gif";
nexton = new Image();
nexton.src = "../Navigation/Graphics/TB2Y152a.gif";
topon = new Image();
topon.src = "../Navigation/Graphics/TB2Y076b.gif";

backoff = new Image();
backoff.src = "../Navigation/Graphics/TB2Y138a.gif";
tocoff = new Image();
tocoff.src = "../Navigation/Graphics/TB2Y144a.gif";
nextoff = new Image();
nextoff.src = "../Navigation/Graphics/TB2Y150a.gif";
topoff = new Image ();
topoff.src = "../Navigation/Graphics/TB2Y074b.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");
	}
}