// JavaScript Document
var lastID = 'a';
function SelectImg(id) {
document.getElementById(lastID).className = "thumbNormal";
document.getElementById(id).className = "thumbSelected";
document.getElementById('preview').src = document.getElementById(id).src;
lastID = id;
}
function LoadTrigger() {
SelectImg('a');
}
window.onload = LoadTrigger;