function ShowNaturalImage(id)
{
var ieBrowser = (document.all) ? 1 : 0;

if (!ieBrowser)
{
img = document.getElementById(id);

var width = img.naturalWidth;
var height = img.naturalHeight;

var newx = width; // set to whatever you want the images max width to be.
var newy = height; // whatever you want the images maximum height to be.

img.width = newx;
img.height = newy;
}
}

function SlimImage(id,displayHeight)
{
var ieBrowser = (document.all) ? 1 : 0;

if (!ieBrowser)
{
img = document.getElementById(id);

var width = img.naturalWidth;
var height = img.naturalHeight;

var newy = displayHeight;

img.width = width*(newy/height);
img.height = newy;
}
}