profshottonoff = new Image(130,160); profshottonoff.src = 'fredshotton2.jpg';
profshottonon = new Image(130,160); profshottonon.src = 'fredshotton1.jpg';
profshottonpress = new Image(130,160); profshottonpress.src = 'fredshotton2.jpg';

canaltripoff = new Image(130,98); canaltripoff.src = 'centenary2a.jpg';
canaltripon = new Image(130,98); canaltripon.src = 'centenary2.jpg';
canaltrippress = new Image(130,98); canaltrippress.src = 'centenary2a.jpg';


function changepic(imgTagName, imgObj) {
if (document.images) {
    document.images[imgTagName].src = imgObj.src}
}