function ResizeImage (ImageID,Source640,Source800) {
var SelectedImage = document.getElementById(ImageID);
if (SelectedImage) {
if (screen.width==640&&Source640)
SelectedImage.src=Source640;
if (screen.width==800&&Source800)
SelectedImage.src=Source800;}};


function SwapImage (ImageID,ShutImage,OpenImage,ThumbID,ShutThumb,OpenThumb) {
var LoadedImage = document.getElementById(ImageID);
var ThumbImage = document.getElementById(ThumbID);
if (LoadedImage.src==OpenImage) {
LoadedImage.src=ShutImage;
ThumbImage.src=OpenThumb;}
else {
if (LoadedImage.src==ShutImage) {
LoadedImage.src=OpenImage;
ThumbImage.src=ShutThumb;
};};}