// JavaScript Document

 if (document.images) {
image0 = new Image;
image1 = new Image;
image2 = new Image;
image3 = new Image;
image0.src = 'assets/images/large_stepup.jpg';
image1.src = 'assets/images/large_straight.jpg';
image2.src = 'assets/images/large_throughfloor.jpg';
image3.src = 'assets/images/large_residential_curved.jpg';
} else {
image0 = '';
image1 = '';
image2 = '';
image3 = '';
document.rollimg = '';
} 

var cap = ['Wheelchair Platforms',
'Wheelchair Lifts',
'Domestic Lifts',
'Stairlifts'];

function rollover(n) {
document.rollimg.src = window['image'+n].src;
document.getElementById('caption').innerHTML = cap[n];
}