<!-- Beginning of JavaScript -

var img1 = new Image();
var img2 = new Image();
var img3 = new Image();
var img4 = new Image();
var img5 = new Image();
var img6 = new Image();

img1.src = "images/1.gif"; 
img2.src = "images/2.gif"; 
img3.src = "images/3.gif"; 
img4.src = "images/4.gif"; 
img5.src = "images/5.gif"; 
img6.src = "images/6.gif";

function imgSwap1(){
document.img1.src=img1.src;
}

function imgSwap2(){
document.img1.src=img2.src;
}

function imgSwap3(){
document.img1.src=img3.src;
}

function imgSwap4(){
document.img1.src=img4.src;
}

function imgSwap5(){
document.img1.src=img5.src;
}

function imgSwap6(){
document.img1.src=img6.src;
}

// - End of JavaScript - -->