var a0=new Image();
a0.src="images/arrow.gif";
var a1=new Image();

a1.src="images/arrowr.gif";
var f0=new Image();
f0.src="images/feedback1.jpg";
var f1=new Image();
f1.src="images/feedback2.jpg";
var c0=new Image();
c0.src="images/contact1.jpg";
var c1=new Image();
c1.src="images/contact2.jpg";

var t0=new Image();
t0.src="images/toc.gif";
var t1=new Image();
t1.src="images/toc1.gif";
var b0=new Image();
b0.src="images/back.gif";
var b1=new Image();
b1.src="images/back1.gif";
var n0=new Image();
n0.src="images/next.gif";
var n1=new Image();
n1.src="images/next1.gif";